US20110084657A1 - Mobile device charging base, and mobile device and charging base system - Google Patents
Mobile device charging base, and mobile device and charging base system Download PDFInfo
- Publication number
- US20110084657A1 US20110084657A1 US12/903,560 US90356010A US2011084657A1 US 20110084657 A1 US20110084657 A1 US 20110084657A1 US 90356010 A US90356010 A US 90356010A US 2011084657 A1 US2011084657 A1 US 2011084657A1
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- United States
- Prior art keywords
- mobile device
- charging base
- mount portion
- spacer
- power supply
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
- H02J7/0044—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction specially adapted for holding portable devices containing batteries
Definitions
- the present invention relates to a mobile device that includes a rechargeable battery, and a charging base that charges this mobile device.
- non-contact charging bases have been developed that transmit electric power from a power supply coil to an induction coil through electromagnetic induction and charge a battery included in a mobile device (see Japanese Patent Laid-Open Publication No. H09-63655 and Japanese Utility Model Publication No. 3011829).
- JP H09-63655-A discloses a system composed of a charging base including a power supply coil that can be energized by a high-frequency power supply, and a battery pack including an induction coil that is electromagnetically coupled to the power supply coil.
- the battery pack further includes a circuit that rectifies an altering current induced by the induction coil and provides the rectified current to its battery so that the battery is charged. According to this system, the battery of the battery pack can be charged in a non-contact manner with the battery pack being placed on the charging base.
- JP U 3011829 discloses a mobile device including a battery on the bottom side of the mobile device and a secondary charging adapter arranged under the battery.
- the secondary charging adapter includes an induction coil and a charging circuit.
- JP U 3011829 also discloses a charging base including a power supply coil that can be electromagnetically coupled to the induction coil.
- the mobile device is placed on the charging base so that the secondary charging adapter is electromagnetically coupled to the power supply coil.
- the power supply coil transmits electric power to the induction coil, and charges the battery of the mobile device.
- Non-contact charging bases it is important for such non-contact charging bases to place a mobile device at a predetermined position of the charging base. If the mobile device is not placed at a predetermined position, a battery of the mobile device may not be appropriately charged.
- the system disclosed in Japanese Patent Laid-Open Publication No. H09-68655 has a disadvantage in that the battery pack cannot be charged if the battery pack is deviated from a predetermined position when placed on the charging base. The reason is that, if the battery pack is deviated from the predetermined position relative to the charging base, the induction coil cannot be not electromagnetically coupled to the power supply coil. Accordingly, deviation of the battery pack relative to the charging base prevents the power supply coil from transmitting electric power to the induction coil.
- the charging base has a positioning protruding portion.
- the mobile device has a positioning recessed portion that can be fitted in the positioning protruding portion. According to this system composed of the mobile device and the charging base, the positioning protruding portion is guided into the positioning recessed portion so that deviation can be prevented between the mobile device and the charging base relative to each other.
- the system disclosed in Japanese Utility Model Publication No. 3011829 has a disadvantage in that users feel it troublesome to guide the positioning protruding portion into the positioning recessed portion when placing the mobile device onto the charging base. Also, this system has another disadvantage in that users cannot always appropriately place the mobile device onto the charging base.
- the positioning recessed portion is formed on the bottom surface of a case and the induction coil is arranged above the positioning recessed portion, this system has another disadvantage in that the mobile device cannot be configured thinner. A mobile device such as mobile phone is required to be configured as thin as possible. For this viewpoint, since the positioning recessed portion increase the thickness of a mobile device, the positioning recessed portion may cause inconvenience when users carry the mobile device.
- the present applicant has developed a charging base that includes a power supply coil that is arranged under the upper plate of the charging base, and a movement mechanism that moves the power supply coil along the inside surface of the upper plate.
- This charging base detects the position of a mobile device placed on the upper plate, and moves the power supply coil to the induction coil of the mobile device by means of the movement mechanism.
- This charging base includes a position detection controller that detects the position of the mobile device placed on the upper plate of a case, and controls the movement mechanism so that the power supply coil is moved to the induction coil of the mobile device.
- This charging base transmits electric power from the power supply coil to the induction coil after the power supply coil is moved to the induction coil of the mobile device.
- this charging base According to this charging base, a battery of the mobile device can be charged even irrespective of positional deviation of the mobile device.
- this charging base will be complicated. The reason is that this charging base requires a mechanism that moves the power supply coil to the induction coil of the mobile device, and a mechanism that detects the position of the mobile device. For this reason, this charging base has a disadvantage in that the manufacturing cost will be high.
- This charging base 10 C has a mount portion 12 C to which a mobile device 50 is mounted.
- the mount portion 12 C has a curved bottom surface 13 C that has a U-shaped groove.
- a power supply coil 21 C is arranged inside the curved bottom surface 13 C, and can be electromagnetically coupled to an induction coil 51 C of the mobile device 50 . Since the bottom surface of the mount portion is curved, in the case where the mobile device 50 has a curved back surface, when the mobile device 50 is put into the mount portion, the mobile device 50 will be guided by its own weight so that the curved back surface is positioned in the bottom of the curved bottom surface.
- the induction coil included inside the curved bottom surface can be always brought in proximity to the power supply coil. Accordingly, electric power can be efficiently transmitted to the induction coil from the power supply coil. As a result, it is possible to quickly charge the battery.
- a stand-type charging base that mounts a mobile device in a mount portion has a disadvantage in that the size and shape of the mobile device are restricted.
- the induction coil 51 C will be relatively deviated upward that is connected to the battery included in the mobile device 50 . Accordingly, the induction coil 51 C may not be appropriately electromagnetically coupled to the power supply coil 21 C of the charging base.
- some mobile devices may have various types of protrusions that protrude from the surfaces of the mobile devices.
- a mobile device has an exterior shape in that a strap or electric terminals protrude from the lower surface or the back surface of the mobile device, such protrusions interfere with the mount portion of the charging base.
- the back surface of the mobile device cannot be properly placed on the mount portion of the charging base.
- the induction coil may be prevented from being electromagnetically coupled to the power supply coil.
- the charging base can appropriately charge only a mobile device that has a predetermined shape and predetermined size, the usability of the charging base will be poor. For this reason, there is a disadvantage in that a dedicated charging base is required by each mobile device.
- the present invention is aimed at further solving the disadvantages. It is an main object of the present invention to provide a mobile device charging base, and a mobile device and charging base system capable of properly charging batteries of mobile devices with different sizes.
- a mobile device charging base is a charging base 10 capable of charging a mobile device 50 including an induction coil 51 and a battery pack 70 .
- the battery pack 70 includes a battery 54 to be charged by electric power induced in this induction coil 51 .
- the charging base 10 can include a base case 11 , a mount portion 12 , a power supply coil 21 , and a power supply 22 .
- the mount portion 12 is formed in a recessed shape in section on the surface of the base case 11 , and can detachably hold the mobile device 50 at a predetermined position.
- the power supply coil 21 is arranged in proximity to and inside the recessed bottom surface of the mount portion 12 , and can be electromagnetically coupled to the induction coil 51 for the battery pack 70 that is attached to the mobile device 50 .
- the power supply 22 is connected to the power supply coil 21 .
- a cut-out portion 85 can be formed in a surface of the mount portion 12 by cutting out a part of the base case 11 . This surface of the mount portion 12 intersects a mount surface of the mobile device 50 that extends along the recessed bottom surface. The cut-off portion 85 communicates with the outside. According to this charging base, even if a mobile device has a protruding member that protrudes from the lower surface of the mobile device, a protruding portion can be brought in the cut-out portion.
- the mobile device can be properly placed so that the back surface of the mobile device is arranged in contact with the mount portion. Therefore, it is possible to appropriately charge a battery of the mobile device. Also, since the cut-out portion communicates with the mount portion that receives the mobile device, the wall of the mount portion that surrounds the mobile device does not exist in this communicating part. Thus, the surface of the mobile device can be exposed. Accordingly, this communicating part can dissipate heat. Therefore, it is possible to suppress that heat is stored in the mobile device in charging/discharging operation. As discussed above, although the mount portion required for electromagnetic induction can be arranged in contact with the mobile device, a part of the surface of the mount portion is cut out that is not required for electromagnetic induction. As a result, it is possible to ensure heat dissipation in addition to appropriate electromagnetic induction.
- a second cut-out portion 86 can be additionally formed in the recessed bottom surface of the mount portion 12 .
- the second cut-out portion 86 communicates with the cut-out portion 85 , and extends in a part of the recessed bottom surface from the edge of the surface intersecting the mount surface so that the edge of the base case 11 opens in a substantially rectangular U shape.
- this charging base since the cut-out portions are continuously formed from the bottom surface, which supports the mobile device, to the back surface, the edge of the base case can be cut out in a rectangular U shape. Therefore, this charging base can hold even a mobile device having a protruding portion that protrudes from the bottom surface to the back surface of the mobile device.
- a mobile device charging base can include a spacer 90 that can be attached to a stopper wall 14 so that an actual size of the mount portion 12 can be changed.
- the stopper wall 14 can support the lower surface of the mobile device 50 .
- the bottom of the mount portion can be shifted upward/downward by attachment/detachment of the space to the mount portion. Since an actual size of the spacer can be changed, the mount portion appropriately can receive even a mobile device with a size smaller than the originally-designed size of the mount portion. Therefore, it is possible to appropriately charge a battery of a smaller mobile device.
- the spacer 90 can include two block portions 91 , and a coupling portion 92 .
- the two block portions 91 are coupled to each other by the coupling portion 92 .
- the block portions 91 can be designed to have surfaces 97 substantially coplanar with interior wall surfaces 89 of the base case 11 when the spacer 90 is attached to the mount portion 12 .
- the interior wall surfaces 89 of the base case 11 face each other, and define the cut-out portion 85 . According to this charging base, even in the case where the spacer is attached to the mount portion, the mount portion can communicate with the cut-out portion via the spacer. Therefore, the advantages of the cut-out portion are not reduced.
- the spacer 90 can have a positioning protruding section 93 that protrudes toward a side to be inserted into the mount portion 12 .
- a positioning recessed section 87 can be formed at a position of the mount portion 12 corresponding to the positioning protruding section 93 so that, when the positioning protruding section 93 of the spacer 90 is inserted into the positioning recessed section 87 of the mount portion 12 , the spacer 90 is positioned in place.
- the spacer can be easily attached in place at a predetermined orientation.
- the base case 6 can have a spacer accommodation portion 96 that accommodates the spacer 90 . According to this charging base, since the spacer can be accommodated in the base case when the spacer is not in use, it is possible to reduce the possibility of losing the spacer not in use.
- the mount portion 12 can be formed inclined on the base case 11 . According to this charging base, since users can place the mobile device onto the mount portion from the top side and the transverse sides, it is possible to improve the usability of the charging base.
- the spacer accommodation portion 96 can be located on the underside of the base case 11 that is a side opposite to the side where the mount portion 12 is formed. According to this charging base, since the spacer accommodation portion is not externally exposed when the charging base is in use, it is possible to provide a cleanly styled charging base with smooth lines, and additionally to effectively use dead space in the case where the mount portion 12 is formed inclined.
- the mount portion 12 can have a substantially U shape in section. According to this charging base, since a mobile device can be placed onto the mount portion even when the mobile device is inclined to some extent, users can easily place the mobile device onto the charging base. In addition, since a mobile device can be moved with wobbling or sliding on the mount portion by its own weight, the mobile device is likely to be placed at a proper orientation.
- a mobile device and charging base system includes a mobile device 50 , and a charging base 10 .
- the mobile device 50 has a device case, a rechargeable battery, and an induction coil 51 .
- the rechargeable battery is detachably attached to the device case.
- the induction coil 51 charges the rechargeable battery by induced electric power.
- the charging base 10 has a base case 11 , a mount portion 12 , a power supply coil 21 , and a power supply 22 .
- the mount portion 12 is formed in a recessed shape in section on the surface of the base case 11 , and can detachably hold the mobile device 50 at a predetermined position.
- the power supply coil 21 is arranged in proximity to and inside a recessed bottom surface of the mount portion 12 , and can be electromagnetically coupled to the induction coil 51 of the mobile device pack 50 that is placed on the mount portion 12 .
- the power supply 22 is connected to the power supply coil 21 .
- the charging base 10 has a cut-out portion 85 that is formed in a surface of the mount portion 12 by cutting out a part of the base case 11 . This surface of the mount portion extends along the recessed bottom surface of the mount portion 12 , and intersects a mount surface of the mobile device 50 .
- the cut-off portion 85 communicates with the outside.
- a protruding portion can be brought in the cut-out portion.
- the mobile device can be properly placed so that the back surface of the mobile device is arranged in contact with the mount portion. Therefore, it is possible to appropriately charge a battery of the mobile device.
- the cut-out portion communicates with the mount portion that receives the mobile device, the wall of the mount portion that surrounds the mobile device does not exist in this communicating part. Thus, the surface of the mobile device can be exposed. Accordingly, this communicating part can dissipate heat. Therefore, it is possible to suppress that heat is stored in the mobile device in charging/discharging operation.
- the mount portion required for electromagnetic induction can be arranged in contact with the mobile device, a part of the surface of the mount portion is cut out that is not required for electromagnetic induction. As a result, it is possible to ensure heat dissipation in addition to appropriate electromagnetic induction.
- an option unit OU can be coupled to the device case of the mobile device 50 .
- the mount portion 12 of the charging base 10 can be designed so that the power supply coil 21 is electromagnetically coupled to the induction coil 51 when the mobile device 50 with the option unit OU coupled thereto is placed on the mount portion 12 .
- the mount portion 12 of the charging base 10 can receive a spacer 90 that adjusts the position of the mobile device 50 so that the power supply coil 21 is electromagnetically coupled to the induction coil 51 even when the mobile device 50 without the option unit OU is placed on the mount portion 50 .
- FIG. 1 is a perspective view showing a mobile device charging base according to an embodiment of the present invention
- FIG. 2 is a perspective view showing the charging base shown in FIG. 1 with a spacer being attached to a left mount portion of the charging base;
- FIG. 3 is a perspective view showing the charging base shown in FIG. 1 as viewed from the bottom side;
- FIG. 4 is a perspective view showing the charging base shown in FIG. 3 with the spacer being mounted to a upper-side (as viewed in the Figures) spacer accommodation portion of the charging base;
- FIG. 5 is a perspective view showing the charging base and electric devices placed on the charging base with the spacers shown in FIG. 2 being attached to the mount portions;
- FIG. 6 is a perspective view showing the charging base and the electric devices shown in FIG. 5 with the electric devices being covered by covering members;
- FIG. 7 is a perspective view showing the charging base and the electric devices shown in FIG. 5 with option units being attached to the electric devices;
- FIG. 8 is a perspective view showing the charging base and the electric devices with option units shown in FIG. 7 with the electric devices being covered by covering members;
- FIG. 9 is an exploded perspective view showing the charging base shown in FIG. 1 with an upper base case being removed from a lower base case;
- FIG. 10 is a cross-sectional view of the charging base and the electric device taken along a line X-X shown in FIG. 5 ;
- FIG. 11 is a cross-sectional view of the charging base and the electric device taken along a line XI-XI shown in FIG. 6 ;
- FIG. 12( a ) is a perspective view showing a mobile device having neither the option unit nor the covering member
- FIG. 12( b ) is a perspective view showing the mobile device having the option unit without the covering member
- FIG. 13( a ) is a perspective view showing a mobile device having the covering member without the option unit;
- FIG. 13( b ) is a perspective view showing the mobile device having the option unit and the covering member
- FIG. 14 is a perspective view of the spacer as viewed from the top side
- FIG. 15 is a perspective view of the spacer as viewed from the back side
- FIG. 16 is a vertically cross-sectional view showing a charging base with a light guiding member according to a modified embodiment, and the mobile device;
- FIG. 17 is a block circuit diagram of the mobile devices and the charging base
- FIG. 18 is a perspective view showing the mobile device with a battery pack being removed from the mobile device
- FIG. 19 is a perspective view showing the battery pack shown in FIG. 18 as viewed from the bottom side;
- FIG. 20 is an exploded perspective view showing the battery pack shown in FIG. 19 ;
- FIG. 21 is a perspective view showing a charging base and a mobile device that have been developed by the present applicant.
- FIG. 22 is a cross-sectional view of the charging base and the electric device taken along a line XXII-XXII shown in FIG. 21 .
- a plurality of structural elements of the present invention may be configured as a single part that serves the purpose of a plurality of elements, on the other hand, a single structural element may be configured as a plurality of parts that serve the purpose of a single element. Also, the description of some of examples or embodiments may be applied to other examples, embodiments or the like.
- FIGS. 1 to 20 show a charging base and mobile devices according to an embodiment of the present invention.
- FIG. 1 is a perspective view of the charging base for the mobile devices.
- FIG. 2 is a perspective view showing a perspective view showing the charging base shown in FIG. 1 with a spacer being mounted to a left mount portion of the charging base.
- FIG. 3 is a perspective view showing the charging base shown in FIG. 1 as viewed from the bottom side.
- FIG. 4 is a perspective view showing the charging base shown in FIG. 3 with the spacer being mounted to an upper-side (as viewed in the Figures) spacer accommodation portion of the charging base.
- FIG. 5 is a perspective view showing the charging base and electric devices placed on the charging base with the spacers shown in FIG. 2 being attached to the mount portions.
- FIG. 1 is a perspective view of the charging base for the mobile devices.
- FIG. 2 is a perspective view showing a perspective view showing the charging base shown in FIG. 1 with a spacer being mounted to a left mount
- FIG. 6 is a perspective view showing the charging base and the electric devices shown in FIG. 5 with the electric devices being covered by covering members and placed on the charging base.
- FIG. 7 is a perspective view showing the charging base and the electric devices shown in FIG. 5 with option units being attached to the electric devices without using a spacer.
- FIG. 8 is a perspective view showing the charging base and the mobile devices with option units shown in FIG. 7 with the mobile devices being covered by covering members and placed on the charging base.
- FIG. 9 is an exploded perspective view showing the charging base shown in FIG. 1 with an upper base case being removed from a lower base case.
- FIG. 10 is a cross-sectional view of the charging base and the electric device taken along a line X-X shown in FIG. 5 .
- FIG. 11 is a cross-sectional view of the charging base and the electric device taken along a line XI-XI shown in FIG. 6 .
- FIG. 12( a ) is a perspective view showing a mobile device having neither the option unit nor the covering member.
- FIG. 12( b ) is a perspective view showing a mobile device having the option unit without the covering member.
- FIG. 13( a ) is a perspective view showing a mobile device having the covering member without the option unit.
- FIG. 13( b ) is a perspective view showing a mobile device having the option unit and the covering member.
- FIG. 14 is a perspective view of the spacer as viewed from the top side.
- FIG. 15 is a perspective view of the spacer as viewed from the back side.
- FIG. 16 is a vertically cross-sectional view showing a charging base with a light guiding member according to a modified embodiment, and the mobile device.
- FIG. 17 is a block circuit diagram of the mobile devices and the charging base.
- FIG. 18 is a perspective view showing the mobile device with battery packs being removed from the mobile device.
- FIG. 19 is a perspective view showing the battery pack shown in FIG. 18 as viewed from the bottom side.
- FIG. 20 is an exploded perspective view showing the battery pack shown in FIG. 19 .
- the illustrated charging base 10 includes a power supply coil 21 , a power supply 22 , and a base case 11 that accommodates the power supply coil 21 and the power supply 22 .
- the base case 11 is composed of two parts of upper and lower base cases 11 A and 11 B as shown in FIG. 9 , etc.
- the outward appearance of the base case 11 is a substantially triangular prism shape as shown in FIGS. 1 to 8 .
- Mount portions 12 are formed on an inclined surface of the triangular prism shape.
- the illustrated exemplary charging base 10 has two mount portions 12 A and 12 B. Two mobile devices 50 A and 50 B can be placed on the two mount portions 12 A and 12 B, and can be charged one by one or simultaneously.
- the mount portions 12 are formed in a recessed shape in section.
- the mobile devices 50 are detachably mounted to the mount portions 12 , and can be charged.
- the charging operation is conducted in a non-contact manner by using electromagnetic coupling between an induction coil 51 and the power supply coil 21 so that terminals are not exposed.
- the power supply coil 21 is arranged inside the base case 11 (on the interior side of the recessed bottom surface of the mount portion 12 ).
- the mobile device 50 includes the induction coil 51 to be electromagnetically coupled to the power supply coil 21 .
- the mobile device 50 includes a device case, a battery pack, and the induction coil 51 .
- the battery pack is detachably attached to the device case, and includes rechargeable batteries.
- the induction coil 51 that charges the rechargeable batteries by induced electric power.
- the material and the shape of the device case can be suitably designed depending on the applications and the like of mobile devices.
- the device case can be formed of polycarbonate, or the like.
- An option unit OU can be coupled to the device case.
- the charging base 10 can charge the batteries 54 of the mobile device 50 .
- the mobile device 50 includes the induction coil 51 , and the battery 54 to be charged by electric power transmitted to the induction coil 51 , as shown in FIGS. 10 , 11 and the like.
- Various types of devices can be used as the mobile device 50 .
- Examples of the mobile device 50 can be provided by remote control unit for operating electronic devices such as video game electronic devices, cordless handset, mobile phone, mobile terminal, PDA, smart phone, pager, portable music player, and the like.
- the option unit OU is refers to as an external device that can be coupled to the mobile device 50 , and changes the entire length of the mobile device when being coupled to the mobile device 50 .
- Examples of the option unit OU can be provided by a sensor for improving the position detecting accuracy of a game controller, an additional battery for increasing battery run time of a mobile phone, etc, a TV tuner, an electronic money communication unit, and the like.
- FIG. 12 shows an exemplary outward appearance of the mobile device.
- FIG. 12( a ) shows the mobile device without an option unit.
- FIG. 12( b ) shows the mobile device with an option unit.
- a covering member 40 can be attached to the exterior of the mobile device 50 .
- the covering member 40 can protect the mobile device 50 from shock in accidental drop, collision and the like, and can provide non-slip effect when users grasp the mobile device 50 .
- FIG. 13 shows the mobile device 50 with the covering member 40 being coupled to the mobile device 50 .
- FIG. 13( a ) shows the mobile device having the covering member without the option unit.
- FIG. 13( b ) shows the mobile device having the option unit and the covering member.
- the mount portion 12 to which the mobile device 50 is mounted preferably has a substantially U shape in section.
- the mobile device 50 can be placed onto the mount portion 12 even when the mobile device 50 is inclined to some extent, users can easily place the mobile device 50 onto the charging base 10 .
- the mobile device 50 can be moved with wobbling or sliding on the mount portion 12 by its own weight, the mobile device 50 is likely to be placed at a proper orientation.
- the mount portion 12 is preferably formed on an inclined side of the right-triangular shape. In this case, since the mount portion 12 is inclined, when users can place the mobile device 50 onto the charging base 10 , the users can place the mobile device 50 onto the charging base 10 from the top side and the transverse sides. Therefore, the charging base 10 has excellent usability.
- the mount portion 12 has a bottom surface that serves as a stopper wall 14 .
- the stopper wall 14 supports the mobile device 50 .
- the top side of the mount portion opens. Accordingly, the mobile device can be held protruding upward from the charging base. In this case, since the upward protruding amount can be adjusted, even a long mobile device can be placed on the mount portion.
- the mount portion 12 can adjust the height of the mobile device by using a spacer 90 . Specifically, as shown in FIG.
- the spacer 90 is prepared that has a predetermined height so that, when the spacer 90 is attached to the bottom surface of the mount portion 12 , the actual height of the bottom surface of the mount portion 12 is raised so that the induction coil 51 of each of mobile devices with different lengths is brought to the same position as the power supply coil 21 .
- one charging base can suitably receive mobile devices with different lengths.
- the spacer is used to raise a short mobile device. For this reason, it is preferable that the mount portion suitably receives the longest mobile device when the spacer is not used. In the case of a shorter mobile device, the spacer is used to raise the actual height of the bottom surface of the mount portion so that the shorter mobile device is positioned at the predetermined position.
- the spacer can provide one charging base with compatibility between mobile devices with different lengths, and can improve the usability of the charging base.
- the mobile devices with different lengths include not only mobile devices with different physical, dimensional overall lengths, but also mobile devices with different lengths resulting from an option unit coupled to a mobile device.
- the shape and dimension of the mount portion 12 , the positional arrangement of the power supply coil 21 inside the mount portion 12 , and the like are designed so that, when a mobile device elongated by the option unit OU coupled to the mobile device is placed on the mount portion 12 , the induction coil 51 of the elongated mobile device is electromagnetically coupled to the power supply coil 21 inside the mount portion 12 .
- the spacer when a shorter mobile device without the option unit OU is placed on the mount portion 12 , the spacer is used to raise the actual height of the bottom surface of the mount portion 12 so that the induction coil 51 of the shorter mobile device is electromagnetically coupled to the power supply coil 21 inside the mount portion 12 .
- the spacer in the case where the spacer is dimensioned so that its height is same as the option unit, the spacer can match the height of a mobile device without the option unit with the height of a mobile device with the option unit. Accordingly, one charging base can charge a mobile device irrespective of whether the option unit is coupled to the mobile device or not.
- FIGS. 14 and 15 show an exemplary outward appearance of the spacer 90 .
- the illustrated spacer 90 has substantially rectangular-shaped block portions 91 , and a coupling portion 92 .
- the substantially rectangular-shaped block portions 91 are coupled by the coupling portion 92 .
- the entire shape of the spacer 90 is a substantially U shape.
- the block portions 91 and the coupling portion 92 are integrally formed of resin such as plastic.
- the block portions 91 are preferably designed to have surfaces 97 coplanar with interior wall surfaces 89 of a later-discussed cut-out portion 85 when the spacer 90 is attached to the mount portion 12 .
- the interior wall surfaces 89 of the base case 11 face each other.
- the spacer 90 does not affect the action of the cut-out portion 85 even when the spacer 90 is attached to the mount portion. Therefore, the charging base can provide the effect by the cut-out portion 85 . That is, even in the case where the spacer 90 is attached to the mount portion, the mount portion can communicate with the cut-out portion 85 via the spacer 90 .
- the cut-out portion 85 can accommodate a protrusion that protrudes from the bottom or back surface of the mobile device 50 . Accordingly, such a protrusion does not interfere with the mount portion 12 when the mobile device 50 is mounted to the mount portion 12 . Therefore, the mobile device 12 can be appropriately electromagnetically coupled to the charging base.
- Positioning protruding sections 93 are formed on the coupling portion 92 of the spacer 90 .
- the positioning protruding sections 93 are formed in a shape that can be inserted into positioning recessed sections 87 formed on a later-discussed second cut-out portion 86 .
- the spacer 90 can be positioned and mounted into a predetermined position of the mount portion 12 by the positioning protruding sections 93 and the positioning recessed sections.
- the exemplary positioning protruding sections 93 shown in FIGS. 14 and 15 have a triangular shape as an extension part of each of the surfaces 97 of the block portions 91 that face each other.
- the triangular positioning protruding sections 93 are suitable for adjusting the spacer 90 to a predetermined orientation when the spacer 90 is inserted into positioning recessed sections even if an insertion direction of the spacer 90 is slightly deviated from the predetermined insertion direction.
- the coupling portion 92 coupled between the positioning protruding sections 93 includes a plate-shaped connecting section 95 that is formed in a wall shape protruding in a direction so that the plate-shaped connecting section 95 closes the second cut-out portion 86 .
- a U-shaped slit 94 may be formed in the connecting section 95 .
- the coupling portion 92 does not completely close the second cut-out portion 86 . Accordingly, the slit 94 allows narrow members such as cable or cord can pass to pass through the second cut-out portion 86 .
- the slit 94 allows the strap to pass through the second cut-out portion. Therefore, it is possible to prevent the strap is caught when in free.
- the spacer 90 has a symmetrical shape both in left-and-right and front-and-back directions.
- the spacer 90 can be attached to the mount portion 12 in any orientations. Accordingly, the attachment direction of the spacer 90 is not limited to a particular orientation. Therefore, the spacer 90 can be suitably used for small children and elderly people.
- the spacer 90 is held in the mount portion 12 by fitting the positioning protruding sections 93 into the positioning recessed sections 87 as shown in FIG. 2 .
- users can catch the coupling portion 92 with their finger and thumb. Therefore, users can easily detach the spacer 90 from the mount portion 12 .
- the spacer can have various shapes.
- the spacer 90 can be formed of plastic or the like.
- the base case 11 has the spacer accommodation portions 96 that are formed to accommodate the spacers 90 .
- the spacer accommodation portions 96 are preferably formed in the bottom surface of the base case 11 . Accordingly, the spacer accommodation portions 96 are not externally exposed when the charging base is in use. Therefore, the charging base can have a smooth and simple outward appearance.
- FIGS. 3 and 4 show the exemplary spacer accommodation portions 96 .
- the exemplary charging base has two mount portions 12 .
- two spacer accommodation portions 96 are formed to accommodate two spacers 90 .
- the exemplary spacer accommodation portion 96 is formed in a recessed shape that has substantially the same size as external shape of the spacer 90 .
- the spacer 90 is fitted into the spacer accommodation portion 96 .
- the spacer 90 can be held in the spacer accommodation portion 96 by elastically deforming the spacer 90 . Since base case 11 has the accommodation portions for accommodating the spacers 90 , users can store the spacers 90 together with the base case 11 . Therefore, it is possible to reduce the possibility of losing the spacers when the spacers are out of use.
- the spacer accommodation portions 96 are preferably formed on a side opposite to the mount portion 12 side of the bottom surface of the base case 11 . In this case, it is possible to effectively use dead space of the triangular base case 11 .
- the charging base 10 has the cut-out portions 85 each of which is formed in a surface of the mount portion 12 intersecting a mount surface of the mobile device 50 by cutting out a part of the base case 11 so that the cut-off portion 85 communicates with the outside.
- the surface of the mount portion 12 intersecting the mount surface of the mobile device 50 is the stopper wall 14 . Since such the cut-out portion 85 is formed, even if the mobile device 50 includes a member that protrudes from the lower surface of the mobile device 50 , when this protruding member is brought in the cut-out portion 85 , it is possible to prevent positional deviation between the induction coil 51 and the power supply coil 21 due to upward deviation of the bottom surface of the mobile device 50 from the stopper wall 14 .
- the induction coil 51 and the power supply coil 21 are insufficiently electromagnetically coupled to each other.
- the mobile device can be placed to the mount portion with the bottom surface of the mobile device being in contact with the stopper wall 14 , without the strap being caught in the gap between the bottom surface of the mobile device and the stopper wall 14 .
- the bottom surface of the mobile device is partially externally exposed from the cut-out portion 85 , it is possible to dissipate heat from the exposed part of the bottom surface of the mobile device.
- the second cut-out portion 86 is formed in the recessed bottom surface of each of the mount portions 12 .
- the second cut-out portion 86 communicates with the cut-out portion 85 .
- the cut-out part extends from the edge to the back surface of the base case 11 .
- the cut-out portion 85 extends in a part of the recessed bottom surface from the edge of the surface intersecting the mount surface so that the edge of the base case 11 opens in a substantially rectangular U shape. Accordingly, even if a mobile device has a protruding part that protrudes from the back surface of the mobile device, such a protruding part can be guided to the second cut-out portion 86 .
- the heat dissipation effect can be improved. Heat is generated by electromagnetic coupling between the induction coil 51 and the power supply coil 21 , and the back surface of the mobile device will accumulate the heat. In the case where the cut-out part is formed on the back surface of the charging base so that the cut-out part communicates with the outside, a path can be produced that allows the heat to be externally dissipated. Therefore, it is possible to improve the heat dissipation.
- the mount portion 12 required for electromagnetic induction can be arranged in place and in contact with the mobile device, a part of the surface of the mount portion 12 is cut out that is not required for electromagnetic induction. As a result, it is possible to improve the heat dissipation in addition to appropriate electromagnetic induction.
- the second cut-out portion 86 communicates with the back surface of the base case.
- the second cut-out portion 86 penetrates substantially the center of the stopper wall 14 in a length direction of the mount portion 12 , and is continuously formed in a rectangular shape extending in a part of the recessed bottom surface as shown in FIG. 1 .
- a second inclined surface 88 is formed at end of the second cut-out portion 86 extending in the recessed bottom surface.
- the second inclined surface 88 is inclined at an inclination angle greater than the inclination angle of the recessed bottom surface, and substantially smoothly extends from the recessed bottom surface to the lower base case 11 B.
- the positioning recessed sections 87 can be formed on the opposed inside wall surfaces 89 of the base case 11 that define the second cut-out portion 86 as shown in FIG. 1 .
- the spacer 90 engages with the positioning recessed sections 87 .
- the positioning recessed sections 87 correspond to the positioning protruding sections 93 , which protrude from the coupling portion 92 of the spacer 90 .
- the positioning recessed sections 87 are formed in a recessed shape into which the positioning protruding section 93 can be fitted. Accordingly, the spacer 90 can be easily attached in place at a predetermined orientation.
- Charging bases 10 shown in FIGS. 1 to 20 have the mount portion 12 on the upper base case 11 A.
- the mount portion 12 of the upper base case 11 A has a U-shaped groove as a curved bottom surface 13 .
- the longitudinal direction of the curved bottom surface 13 of U-shaped groove is inclined upward toward the back of the upper base case 11 .
- the stopper wall 14 is arranged on the lower end of the mount portion 12 .
- This mount portion 12 has a U-shaped groove in a cross-sectional view as viewed from the longitudinal direction of the mount portion 12 . Accordingly, the mount portion 12 can accurately guide the mobile device 50 to a predetermined position.
- This upper base case 11 A is formed of plastic by molding in a shape that provides a pair of side walls 15 on the both sides of the mount portion 12 , and the stopper wall 14 on the lower end of the mount portion 12 .
- the upper base case 11 A can have a light guide 31 that is externally exposed on the stopper wall 14 .
- the light guide 31 guides light emitted by an LED 30 , and emits the light from the light guide 31 outward.
- the light guide 31 arranged in an exemplary charging base is shown by a diagonally shaded area in the cross-sectional view of FIG. 16 .
- the light guide 31 is formed of transparent plastic.
- the light guide 31 is secured on the lower base case 11 B.
- the LED 30 is arranged on a circuit board 20 secured in the base case 11 .
- the light guide 31 guides the light from the LED 30 to an exposed portion 31 A arranged on the end of the light guide 31 , and emits the light from the exposed portion 31 A outward.
- the end of the exposed portion 31 A has an exposed part that is externally exposed on the outside of the stopper wall 14 , and an exposed part that is externally exposed on the inside (i.e., the mount portion 12 side) of the stopper wall 14 .
- the light from the LED 30 is emitted from the outside and inside of the stopper wall 14 .
- the light emitted from the inside of the stopper wall 14 illuminates the covering member 40 of the mobile device 50 so that the covering member 40 emits light as shown in FIG. 16 .
- the charging base 10 includes the power supply coil 21 , which is arranged inside the curved bottom surface 13 of the upper base case 11 A, as shown in FIGS. 9 to 11 .
- the power supply coil 21 is a flat coil consisting of wire wound in a flat surface.
- the power supply coil 21 is arranged in proximity to the interior surface of the curved bottom surface 13 .
- the power supply coil 21 is wound in an elongated loop shape that extends in the longitudinal direction of the U-shaped groove so that electric power can be transmitted in an elongated area that extends in the longitudinal direction.
- the illustrated power supply coil 21 is described as a flat coil, the power supply coil can be a planar coil that is curved along the curved surface on the both side of the curved bottom surface.
- a shield layer 23 is arranged on a side opposite to the induction coil 51 (the lower side relative to the power supply coil 21 in the Figures) to electromagnetically shield the power supply coil 21 .
- the shield layer 23 is formed of high-permeability metal or ferrite.
- the shield layer 23 electromagnetically shields the power supply coil 21 on the side opposite to the induction coil 51 .
- the shield layer 23 and the power supply coil 21 are secured to a support base 16 that is formed of plastic and arranged in the base case 11 .
- the circuit board 20 is between the support base 16 and the lower base case 11 B.
- the support base 16 is secured to the lower base case 11 B.
- the shield layer 23 and the power supply coil 21 are arranged in predetermined positions of the base case 11 .
- This support base 16 has an inclined surface 16 A that extends along the curved bottom surface 13 .
- the shield layer 23 and the power supply coil 21 are laminated on and secured to the inclined surface 16 A.
- the power supply coil 21 is connected to the high-frequency power supply 22 mounted on the circuit board 20 as shown in the circuit diagram of FIG. 17 .
- the high-frequency power supply 22 converts DC electric power provided from an AC/DC adaptor 25 into high-frequency electric power, and provides the converted electric power to the power supply coil 21 .
- the high-frequency power supply 22 includes a circuit that cuts off output of high-frequency electric power when the battery 54 in the mobile device 50 is fully charged.
- the mobile device 50 includes a charging circuit 52 that detects that the battery 54 of the mobile device 50 is fully charged.
- the high-frequency power supply 22 communicates with the charging circuit 52 of the mobile device 50 .
- the high-frequency power supply 22 can detect based on the communication with the charging circuit 25 that the battery 54 of the mobile device 50 is fully charged. Thus, the high-frequency power supply 22 cuts off the output when the battery 54 in the mobile device 50 is fully charged.
- the aforementioned charging base 10 includes two mount portions 12 , two mobile devices 50 A and 50 B can be placed on the mount portions 12 and can be charged.
- the number of the mount portions is not limited to two, but can be one, or three or more.
- the number of the mobile devices can be adjusted that are placed on the connected charging bases.
- the charging bases can be coupled to each other side by side.
- each charging base can include a coupler that detachably couples one charging base to another charging base arranged beside the one charging base.
- the circuit diagram of the high-frequency power supply 22 in the charging base 10 is shown in FIG. 17 .
- the power supply 22 is provided with electric power from the AC/DC adaptor 25 via a power supply connector 26 .
- the high-frequency power supply 22 charges the battery 54 of the mobile device 50 . That is, the high-frequency power supply 22 energizes the power supply coil 21 .
- An exemplary procedure is now described that charges batteries 54 A and 54 B of first and second mobile devices 50 A and 50 B placed on two mount portions by using the circuit shown in FIG. 17 .
- DC electric power is provided from the AC/DC adaptor 25 to the power supply 22 A of the first mount portion 12 A.
- the power supply 22 A of the first mount portion 12 A energizes the power supply coil 21 A with the DC electric power provided from the AC/DC adaptor 25 , and charges the battery MA of the first mobile device 50 A.
- the power supply 22 A of the first mount portion 12 A stops energizing the power supply coil 21 A, and the DC electric power is provided to the second mount portion 12 B.
- the power supply 22 B of the second mount portion 12 B energizes the power supply coil 216 with the provided DC electric power provided, and charges the battery 54 B of the second mobile device 50 B.
- the power supply 22 B of the second mount portion 12 B stops energizing the power supply coil 21 B, and stops charging the battery 54 B.
- the batteries 54 of the mobile devices 50 can be fully charged without increasing output of electric power from the AC/DC adaptor 25 .
- the mobile device 50 has a curved back surface 53 to be placed on the mount portion 12 of the charging base 10 .
- the curved back surface 53 is formed in a curved shape that extends along the curved bottom surface 13 of U-shaped groove as shown in FIGS. 10 and 11 .
- the induction coil 51 is arranged inside the curved back surface 53 .
- the induction coil 51 is wound in a curved plane extending along the curved back surface 53 .
- FIG. 13 is the perspective view showing the mobile device 50 covered by the detachable covering member 40 .
- the covering member 40 covers a surface part of the mobile device 50 without operation portions 65 such as switches arranged on the case surface of the mobile device 50 so that the operation portions 65 are externally exposed.
- the illustrated mobile device 50 includes the operation portions 65 such as switches, which are arranged in parts of the front and back surfaces.
- the covering member covers substantially the whole surface of the back surface of the mobile device 50 without the operation portions 65 except an upper switch portion of the mobile device 50 , the outer peripheral surface of the Mobile device 50 , and the front outer peripheral part of the mobile device 50 .
- the outer peripheral surface of the mobile device 50 includes the both side surfaces, and upper and lower surfaces.
- the covering member 40 can elastically contract, and can tightly cover surfaces of the mobile device 50 .
- the covering member 40 can elastically expand, and can be removed from the mobile device 50 .
- the mobile device 50 can be placed on the mount portion 12 of the charging base 10 to charge the battery 54 included in the mobile device 50 with the covering member 40 covering the mobile device 50 , or without the covering member.
- the covering member 40 is formed of elastic soft plastic, or natural or synthetic rubber, and protects the mobile device 50 from shock in accidental drop, collision and the like.
- the mobile device 50 includes the induction coil 51 inside the curved back surface 53 .
- the induction coil 51 is wound in a curved plane extending along the curved back surface 53 .
- the mobile device 50 shown in FIGS. 10 , 11 , and 18 has a battery accommodating portion 61 .
- the battery accommodating portion 61 can accommodate a plurality of cylindrical batteries 54 in parallel to each other.
- a battery pack 70 is detachably mounted to the battery accommodating portion 61 .
- the battery accommodating portion 61 is arranged opening on the back surface of the mobile device 50 . After the battery pack 70 is mounted to the battery accommodating portion 61 , the opening of the battery accommodating portion 61 is closed.
- the illustrated mobile device 50 includes the battery 54 and the induction coil 51 in the battery pack 70 .
- the induction coil 51 is accommodated inside the curved back surface 53 .
- the battery accommodating portion 61 has a shape that can accommodate a plurality of AA batteries (two AA batteries in FIGS. 10 , 11 and 18 ) 54 B shown by dashed lines in FIGS. 10 , 11 and 18 .
- the battery pack 70 has an outward shape that can be detachably mounted to the battery accommodating portion 61 instead of a plurality of AA batteries (two AA batteries in FIGS. 10 , 11 and 18 ) 546 .
- the thus-configured mobile device 50 can be conveniently used both with the AA batteries 54 B and the rechargeable battery pack 70 as shown in FIG. 18 . Needless to say, it is not always necessary for the mobile device to include the detachable battery pack.
- the mobile device can include a rechargeable battery that cannot be detached from the mobile device.
- the mobile device can include the induction coil that is arranged inside the curved back surface and provides charging electric power to this battery.
- the opening of the mobile device 50 is closed by a detachable lid 63 as shown by the dashed lines in FIG. 18 .
- the detachable lid 63 is detachably attached to the opening of the battery accommodating portion 61 .
- the AA batteries 548 can be mounted to the battery accommodating portion 61 .
- the detachable lid 63 is attached to the mobile device 50 so that the opening of the battery accommodating portion 61 is closed.
- the battery pack 70 is mounted to the battery accommodating portion 61 after the detachable lid 63 is removed.
- the battery pack 70 to be mounted to the battery accommodating portion 61 has a detachable lid configured integrally with the battery pack 70 .
- FIGS. 19 and 20 is an exploded perspective view showing the battery pack 70 shown in FIG. 19 .
- FIGS. 10 and 11 are the cross-sectional views of the mobile device 50 placed on the charging base 10 .
- the illustrated battery pack 70 includes a battery case 71 , two AAA batteries 54 A, a battery holder 72 , a circuit board 73 , a bracket 74 , a shield layer 75 , the induction coil 51 , and a back surface cover 76 .
- the battery case 71 accommodates the batteries 54 .
- the AAA batteries MA are accommodated in the battery case 71 .
- the battery holder 72 holds the AAA batteries 54 A in place.
- the circuit board 73 is arranged on the battery holder 72 , and is connected to the batteries 54 .
- the bracket 74 is arranged on the circuit board 73 .
- the shield layer 75 is arranged on the bracket 74 .
- the induction coil 51 is arranged on the shield layer 75 .
- the back surface cover 76 is arranged on the induction coil 51 .
- the back surface cover 76 , the bracket 74 , and the battery holder 72 are formed of insulating plastic.
- the back surface cover 76 is formed in a curved plane shape that extends along the curved back surface 53 of the mobile device 50 .
- the illustrated back surface cover 76 is used instead of the detachable lid 63 for closing the battery accommodating portion 61 .
- the back surface cover 76 has an external shape capable of closing the opening of the battery accommodating portion 61 , in other words, the same exterior shape as the detachable lid 63 .
- the illustrated battery pack 70 is mounted to the battery accommodating portion 61 of the mobile device 50 by means of the back surface cover 76 .
- Interlocking hooks 77 are formed integrally with the upper end (the lower left side in FIG. 19 ) of the back surface cover 76 .
- An elastic hook 78 is formed integrally with the lower end (the upper right side in FIG. 19 ) of the back surface cover 76 , and interlocks with the opening of the battery accommodating portion 61 .
- the back surface cover 76 can be detachably attached to the opening of the battery accommodating portion 61 .
- the retaining recessed portions 67 and 68 are formed on the upper and lower ends of the battery accommodating portion 61 of the battery accommodating portion 61 .
- the interlocking hooks 77 and the elastic hook 78 can interlock with the retaining recessed portions 67 and 68 .
- the elastic hook 78 can interlock with the retaining recessed portion 68 .
- the battery pack 70 can be securely mounted in the battery accommodating portion 61 .
- the battery pack 70 can be removed from the mobile device 50 .
- Tenon parts 79 are formed in central parts on the both side edges of the back surface cover 76 shown in the cross-sectional views of FIGS. 10 and 11 .
- the tenon parts 79 extend in the longitudinal direction of the back surface cover 76 .
- the tenon parts 79 can be fitted into guiding mortise parts 69 that are formed on the both side edges of the opening both sides of the battery accommodating portion 61 formed in the mobile device 50 .
- the back surface cover 76 is reliably attached to the opening.
- the induction coil 51 is arranged on the interior surface of the back surface cover 76 .
- the induction coil 51 is composed of copper wire as metal the surface of which is provided with an insulating film.
- the copper wire is wound in a plane.
- the wounded copper wire is deformed to expand along the curved interior surface of the back surface cover 76 .
- the induction coil 51 is arranged in proximity to the curved surface of the back surface cover 76 .
- the induction coil 51 has an elongated loop shape that extends in the longitudinal direction of the mobile device 50 , in other words, the longitudinal direction of the AAA battery 54 A to efficiently electromagnetically couple the induction coil 51 to the power supply coil 21 .
- the shield layer 75 is laminated on the lower surface of the induction coil 51 to magnetically shield the circuit board 73 and the batteries 54 from the power supply coil 21 .
- the shield layer 75 is formed of high-permeability metal or ferrite, and prevents that high frequency of the power supply coil 21 affects the circuit board 73 and the batteries 54 .
- the shield layer 75 has a curved shape that extends along the induction coil 51 , and is arranged in proximity to the back surface of the induction coil 51 .
- the bracket 74 is formed of plastic.
- a surface of the bracket 74 facing the back surface cover 76 is formed in a curved shape that extends along the back surface cover 76 .
- a curved gap is arranged between this surface of the bracket 74 and the interior surface of the back surface cover 76 .
- the induction coil 51 and the shield layer 75 are interposed between the surface of the bracket 74 and the interior surface of the back surface cover 76 , and is secured in the gap.
- the back surface of the bracket 74 which faces the circuit board 73 , is flat.
- the back surface of the bracket 74 can have recessed parts that guide electronic components mounted on the circuit board 73 so that the bracket 74 is arranged on the circuit board 73 .
- Positioning protrusions 74 a are formed integrally with the surface of the bracket 74 , and hold the induction coil 51 in place.
- the positioning protrusions 74 a are guided into the inside hole of the elongated induction coil 51 so that the induction coil 51 is held in place.
- the positioning protrusions of the bracket 74 shown in FIG. 19 are spaced away from each other in the longitudinal direction of the inside hole of the elongated induction coil 51 , and can be arranged at the both ends of the inside hole of the elongated induction coil 51 . Accordingly, the positioning protrusions can hold the induction coil 51 in place.
- parts of the bracket 74 corresponding to the positioning protrusions 74 a are formed thick, and serve as bosses that receive screws for fastening the battery case 71 .
- Fastening screws 81 pass through the battery case 71 , and are screwed into the positioning protrusions 74 a of the bracket 74 .
- the battery case 71 is secured to the bracket 74 .
- the battery holder 72 holds a plurality of AAA batteries (two AAA batteries in the illustrated battery holder) 54 B in place, and positions the circuit board 73 in place.
- the battery holder 72 is formed of plastic, and has holding recessed portions 72 a that are arranged on a battery-facing surface to hold the batteries 54 .
- the illustrated battery pack 70 includes two AAA batteries 54 A. Correspondingly, two holding recessed portions 72 a are arranged in parallel to each other extending along the cylindrical shape of the AAA batteries 54 A.
- the battery pack 70 with the AAA batteries 54 A can be mounted to the battery accommodating portion 61 instead of the AA batteries 54 B shown by the dashed lines in FIGS. 10 and 11 .
- the AAA battery 54 A has an outer diameter smaller than the AA battery 54 B.
- Peripheral walls 72 b are formed integrally with the battery holder 72 on a board-facing surface of the battery holder 72 that faces the circuit board 73 .
- the circuit board 73 can be arranged inside the peripheral walls 72 b , and held in place.
- the circuit board 73 is fitted into space inside the peripheral walls 72 b , and held in place.
- the battery holder 72 has a recessed portion 72 c on the board-facing surface.
- the recessed portion 72 c can guide electronic components 84 mounted on the circuit board 73 . Since the recessed portion 72 c is located between the adjacent batteries 54 , it is possible to effectively use the accommodation space portion 82 formed between the batteries 54 to accommodate the electronic components 84 .
- the battery case 71 is formed of plastic in a box shape that can accommodate a plurality of AAA batteries (two AAA batteries in the illustrated battery case 71 ) 54 A.
- the battery case 71 has an opening facing the back surface cover 76 .
- the opening rims of the box-shaped battery case 71 are coupled to the back surface cover 76 by a fit-in retaining structure or by welding.
- the opening of battery case 71 is closed by the back surface cover 76 so that the battery pack is assembled.
- a guiding groove 71 a is formed on the bottom surface of the battery case 71 shown in the cross-sectional view of FIGS. 10 and 11 .
- the guiding groove 71 a guides a partitioning wall 66 arranged in the battery accommodating portion 61 .
- the partitioning wall 66 is arranged between the batteries 54 to accommodate the M batteries 54 B in place.
- Holding ribs 71 b are formed integrally with the battery case 71 on the both sides of the guiding groove 71 a .
- the holding ribs 71 b can hold the AAA batteries 54 A in place.
- the AAA batteries 54 A are held in place by interposing each of the AAA batteries 54 A between each of the holding ribs 71 b and each of the side walls of the battery case 71 .
- the battery case 71 has terminal windows 71 c that opens to externally expose output terminals 83 .
- the output terminals 83 are externally exposed from the terminal windows 71 c .
- the output terminals 83 of the battery pack 70 can be in contact with power supply terminals 62 arranged in the battery accommodating portion 61 so that electric power is provided to the mobile device 50 .
- the power supply terminals 62 are arranged at the same positions as terminals of the AA batteries 54 B when the AA batteries 54 B are accommodated in the battery accommodating portion 61 .
- the battery pack 70 can be accommodated instead of the AA batteries 54 B so that electric power is provided to the mobile device 50 from the battery pack 70 .
- the aforementioned battery pack 70 is assembled by the following processes.
- the batteries 54 are accommodated in the battery case 71 , and then the battery holder 72 is placed on the batteries 54 so that the batteries 54 are held in place.
- the circuit board 73 and the bracket 74 are placed on the battery holder 72 .
- the shield layer 75 is placed on the bracket 74
- the induction coil 51 is placed to interpose the shield layer 75 between the bracket 74 and the induction coil 51 .
- the induction coil 51 is arranged in a predetermined position of the bracket 74 .
- the circuit board 73 , the battery 54 , and the induction coil 51 are connected to each other.
- the output terminals 83 connected to the circuit board 73 is arranged in the terminal windows 71 c of the battery case 71 on the interior side.
- the fastening screws 81 are brought to pass through the battery case 71 , and are screwed into the positioning protrusions 74 a of the bracket 74 .
- the battery case 74 is secured to the bracket 71 so that a battery assembly 80 is configured.
- the opening rims of the battery case 71 are coupled to the back surface cover 76 so that the battery assembly 80 is secured to the back surface cover 76 .
- the mobile device 50 can be covered by the detachable covering member 40 , and the mount portion 12 of the charging base 10 has an inner shape that can receive the mobile device 50 covered by the covering member 40 .
- the mobile device 50 can be guided to the predetermined position of the mount portion 12 so that the power supply coil 21 is arranged in proximity to the induction coil 51 . Therefore, it is possible to efficiently charge the batteries 54 of the mobile device 50 .
- the mobile device 50 without the covering member when the mobile device 50 without the covering member is appropriately placed, the lowest part of the curved bottom surface 13 of the charging base 10 aligns with and comes in contact with the lowest part of the curved back surface 53 of the mobile device 50 . Since the curved bottom surface 13 of the charging base 10 and the curved back surface 53 of the mobile device 50 have symmetrical shapes, when the mobile device 50 is mounted to the mount portion 12 of the charging base 10 , the mobile device 50 slides down by its weight and can be placed at the appropriated position. In the case where the curved bottom surface 13 of the charging base 10 and the curved back surface 53 of the mobile device 50 are formed of a plastic material with small friction coefficient, the mobile device 50 can slide down and can be thus placed at the appropriated position.
- the mobile device 50 is covered by covering member 40 as shown in FIG. 11 , it possible to easily put the mobile device 50 in place and to efficiently charge the mobile device 50 .
- the reason is that, when the curved back surface 53 of the mobile device 50 is placed onto the curved bottom surface 13 of the charging base 10 , the mobile device 50 can be put in place as follows:
- the mobile device 50 can be suitably put in place.
- the curved bottom surface 13 of the charging base 10 and the curved back surface 53 of the mobile device 50 have symmetrical shapes, when the center lines the charging base 10 and the mobile device 50 align with each other, the mobile device 50 can be suitably put in place.
- the front surface of the mobile device 50 is horizontally arranged in the right-and-left direction, the mobile device 50 can be suitably put in place.
- a charging base for the mobile device, and a charging base and mobile device system according to the present invention can be suitably used to charge game controller, cordless telephone, mobile phone, portable music player, and the like.
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- Engineering & Computer Science (AREA)
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
A charging base for charging a mobile device includes an induction coil and a battery pack. The pack includes a battery charged by the induction coil. The base includes a base case, a mount portion, a power supply coil, and a power supply. The mount portion is recessed on the surface of the case, and can detachably hold the device. The power supply coil is arranged in proximity to and inside the recessed bottom surface of the mount portion to be electromagnetically coupled to the induction coil, and connected to the power supply coil. A cut-out portion is formed in a surface of the mount portion by partially cutting out the case to communicate with the outside. This surface intersects a mount surface of the device.
Description
- 1. Field of the Invention
- The present invention relates to a mobile device that includes a rechargeable battery, and a charging base that charges this mobile device.
- 2. Description of the Related Art
- So-called non-contact charging bases have been developed that transmit electric power from a power supply coil to an induction coil through electromagnetic induction and charge a battery included in a mobile device (see Japanese Patent Laid-Open Publication No. H09-63655 and Japanese Utility Model Publication No. 3011829).
- JP H09-63655-A discloses a system composed of a charging base including a power supply coil that can be energized by a high-frequency power supply, and a battery pack including an induction coil that is electromagnetically coupled to the power supply coil. The battery pack further includes a circuit that rectifies an altering current induced by the induction coil and provides the rectified current to its battery so that the battery is charged. According to this system, the battery of the battery pack can be charged in a non-contact manner with the battery pack being placed on the charging base.
- Also, JP U 3011829 discloses a mobile device including a battery on the bottom side of the mobile device and a secondary charging adapter arranged under the battery. The secondary charging adapter includes an induction coil and a charging circuit.
- JP U 3011829 also discloses a charging base including a power supply coil that can be electromagnetically coupled to the induction coil. The mobile device is placed on the charging base so that the secondary charging adapter is electromagnetically coupled to the power supply coil. The power supply coil transmits electric power to the induction coil, and charges the battery of the mobile device.
- It is important for such non-contact charging bases to place a mobile device at a predetermined position of the charging base. If the mobile device is not placed at a predetermined position, a battery of the mobile device may not be appropriately charged. For example, the system disclosed in Japanese Patent Laid-Open Publication No. H09-68655 has a disadvantage in that the battery pack cannot be charged if the battery pack is deviated from a predetermined position when placed on the charging base. The reason is that, if the battery pack is deviated from the predetermined position relative to the charging base, the induction coil cannot be not electromagnetically coupled to the power supply coil. Accordingly, deviation of the battery pack relative to the charging base prevents the power supply coil from transmitting electric power to the induction coil. This disadvantage can be solved by the charging base and the mobile device disclosed in Japanese Utility Model Publication No. 3011829. The charging base has a positioning protruding portion. The mobile device has a positioning recessed portion that can be fitted in the positioning protruding portion. According to this system composed of the mobile device and the charging base, the positioning protruding portion is guided into the positioning recessed portion so that deviation can be prevented between the mobile device and the charging base relative to each other.
- However, the system disclosed in Japanese Utility Model Publication No. 3011829 has a disadvantage in that users feel it troublesome to guide the positioning protruding portion into the positioning recessed portion when placing the mobile device onto the charging base. Also, this system has another disadvantage in that users cannot always appropriately place the mobile device onto the charging base. In addition, since the positioning recessed portion is formed on the bottom surface of a case and the induction coil is arranged above the positioning recessed portion, this system has another disadvantage in that the mobile device cannot be configured thinner. A mobile device such as mobile phone is required to be configured as thin as possible. For this viewpoint, since the positioning recessed portion increase the thickness of a mobile device, the positioning recessed portion may cause inconvenience when users carry the mobile device.
- These disadvantages can be solved by generating a magnetic field in a large area on the entire upper surface of the charging base to transmit electric power to the induction coil. However, in this case, since the magnetic field is generated even in a part of the upper surface of the charging base where the mobile device is not placed, there is a disadvantage in that the electric power efficiency is reduced that is transmitted from the power supply coil to the induction coil. In addition, there is another disadvantaged in that, if metal such as iron is placed on the charging base, heat may be generated by a current produced in the metal by magnetic induction.
- The present applicant has developed a charging base that includes a power supply coil that is arranged under the upper plate of the charging base, and a movement mechanism that moves the power supply coil along the inside surface of the upper plate. This charging base detects the position of a mobile device placed on the upper plate, and moves the power supply coil to the induction coil of the mobile device by means of the movement mechanism. This charging base includes a position detection controller that detects the position of the mobile device placed on the upper plate of a case, and controls the movement mechanism so that the power supply coil is moved to the induction coil of the mobile device. This charging base transmits electric power from the power supply coil to the induction coil after the power supply coil is moved to the induction coil of the mobile device.
- According to this charging base, a battery of the mobile device can be charged even irrespective of positional deviation of the mobile device. However, this charging base will be complicated. The reason is that this charging base requires a mechanism that moves the power supply coil to the induction coil of the mobile device, and a mechanism that detects the position of the mobile device. For this reason, this charging base has a disadvantage in that the manufacturing cost will be high.
- In order to solve the aforementioned disadvantage, the present applicant has developed a charging base 10C shown in
FIGS. 21 and 22 . This charging base 10C has a mount portion 12C to which amobile device 50 is mounted. The mount portion 12C has acurved bottom surface 13C that has a U-shaped groove. Apower supply coil 21C is arranged inside thecurved bottom surface 13C, and can be electromagnetically coupled to aninduction coil 51C of themobile device 50. Since the bottom surface of the mount portion is curved, in the case where themobile device 50 has a curved back surface, when themobile device 50 is put into the mount portion, themobile device 50 will be guided by its own weight so that the curved back surface is positioned in the bottom of the curved bottom surface. According to this charging base, the induction coil included inside the curved bottom surface can be always brought in proximity to the power supply coil. Accordingly, electric power can be efficiently transmitted to the induction coil from the power supply coil. As a result, it is possible to quickly charge the battery. - However such a stand-type charging base that mounts a mobile device in a mount portion has a disadvantage in that the size and shape of the mobile device are restricted. For example, if the
mobile device 50 has an entire length longer than that ofFIG. 21 , theinduction coil 51C will be relatively deviated upward that is connected to the battery included in themobile device 50. Accordingly, theinduction coil 51C may not be appropriately electromagnetically coupled to thepower supply coil 21C of the charging base. Also, some mobile devices may have various types of protrusions that protrude from the surfaces of the mobile devices. For example, in the case where a mobile device has an exterior shape in that a strap or electric terminals protrude from the lower surface or the back surface of the mobile device, such protrusions interfere with the mount portion of the charging base. In this case, the back surface of the mobile device cannot be properly placed on the mount portion of the charging base. As a result, the induction coil may be prevented from being electromagnetically coupled to the power supply coil. In this case, since the charging base can appropriately charge only a mobile device that has a predetermined shape and predetermined size, the usability of the charging base will be poor. For this reason, there is a disadvantage in that a dedicated charging base is required by each mobile device. - In addition, from viewpoint of electromagnetic coupling, it is important to bring the mount portion in contact with the mobile device. However, in the case where the mount portion is brought in contact with the mobile device, there is a disadvantage in that heat is locally generated by charging operation.
- The present invention is aimed at further solving the disadvantages. It is an main object of the present invention to provide a mobile device charging base, and a mobile device and charging base system capable of properly charging batteries of mobile devices with different sizes.
- A mobile device charging base according to a first aspect of the present invention is a
charging base 10 capable of charging amobile device 50 including aninduction coil 51 and abattery pack 70. Thebattery pack 70 includes abattery 54 to be charged by electric power induced in thisinduction coil 51. The chargingbase 10 can include abase case 11, amount portion 12, apower supply coil 21, and apower supply 22. Themount portion 12 is formed in a recessed shape in section on the surface of thebase case 11, and can detachably hold themobile device 50 at a predetermined position. Thepower supply coil 21 is arranged in proximity to and inside the recessed bottom surface of themount portion 12, and can be electromagnetically coupled to theinduction coil 51 for thebattery pack 70 that is attached to themobile device 50. Thepower supply 22 is connected to thepower supply coil 21. In addition, a cut-outportion 85 can be formed in a surface of themount portion 12 by cutting out a part of thebase case 11. This surface of themount portion 12 intersects a mount surface of themobile device 50 that extends along the recessed bottom surface. The cut-offportion 85 communicates with the outside. According to this charging base, even if a mobile device has a protruding member that protrudes from the lower surface of the mobile device, a protruding portion can be brought in the cut-out portion. Thus, the mobile device can be properly placed so that the back surface of the mobile device is arranged in contact with the mount portion. Therefore, it is possible to appropriately charge a battery of the mobile device. Also, since the cut-out portion communicates with the mount portion that receives the mobile device, the wall of the mount portion that surrounds the mobile device does not exist in this communicating part. Thus, the surface of the mobile device can be exposed. Accordingly, this communicating part can dissipate heat. Therefore, it is possible to suppress that heat is stored in the mobile device in charging/discharging operation. As discussed above, although the mount portion required for electromagnetic induction can be arranged in contact with the mobile device, a part of the surface of the mount portion is cut out that is not required for electromagnetic induction. As a result, it is possible to ensure heat dissipation in addition to appropriate electromagnetic induction. - In a mobile device charging base according to a second aspect of the present invention, a second cut-out
portion 86 can be additionally formed in the recessed bottom surface of themount portion 12. The second cut-outportion 86 communicates with the cut-outportion 85, and extends in a part of the recessed bottom surface from the edge of the surface intersecting the mount surface so that the edge of thebase case 11 opens in a substantially rectangular U shape. According to this charging base, since the cut-out portions are continuously formed from the bottom surface, which supports the mobile device, to the back surface, the edge of the base case can be cut out in a rectangular U shape. Therefore, this charging base can hold even a mobile device having a protruding portion that protrudes from the bottom surface to the back surface of the mobile device. In addition, it is possible to increase the area of a part of a mobile device that is exposed from the base case, and to improve heat dissipation effect. - A mobile device charging base according to a third aspect of the present invention can include a
spacer 90 that can be attached to astopper wall 14 so that an actual size of themount portion 12 can be changed. Thestopper wall 14 can support the lower surface of themobile device 50. According to this charging base, the bottom of the mount portion can be shifted upward/downward by attachment/detachment of the space to the mount portion. Since an actual size of the spacer can be changed, the mount portion appropriately can receive even a mobile device with a size smaller than the originally-designed size of the mount portion. Therefore, it is possible to appropriately charge a battery of a smaller mobile device. - In a mobile device charging base according to a fourth aspect of the present invention, the
spacer 90 can include twoblock portions 91, and acoupling portion 92. The twoblock portions 91 are coupled to each other by thecoupling portion 92. In addition, theblock portions 91 can be designed to havesurfaces 97 substantially coplanar with interior wall surfaces 89 of thebase case 11 when thespacer 90 is attached to themount portion 12. The interior wall surfaces 89 of thebase case 11 face each other, and define the cut-outportion 85. According to this charging base, even in the case where the spacer is attached to the mount portion, the mount portion can communicate with the cut-out portion via the spacer. Therefore, the advantages of the cut-out portion are not reduced. - In a mobile device charging base according to a fifth aspect of the present invention, the
spacer 90 can have apositioning protruding section 93 that protrudes toward a side to be inserted into themount portion 12. In addition, a positioning recessedsection 87 can be formed at a position of themount portion 12 corresponding to thepositioning protruding section 93 so that, when thepositioning protruding section 93 of thespacer 90 is inserted into the positioning recessedsection 87 of themount portion 12, thespacer 90 is positioned in place. According to this charging base, the spacer can be easily attached in place at a predetermined orientation. - In a mobile device charging base according to a sixth aspect of the present invention, the base case 6 can have a
spacer accommodation portion 96 that accommodates thespacer 90. According to this charging base, since the spacer can be accommodated in the base case when the spacer is not in use, it is possible to reduce the possibility of losing the spacer not in use. - In a mobile device charging base according to a seventh aspect of the present invention, the
mount portion 12 can be formed inclined on thebase case 11. According to this charging base, since users can place the mobile device onto the mount portion from the top side and the transverse sides, it is possible to improve the usability of the charging base. - In a mobile device charging base according to an eighth aspect of the present invention, the
spacer accommodation portion 96 can be located on the underside of thebase case 11 that is a side opposite to the side where themount portion 12 is formed. According to this charging base, since the spacer accommodation portion is not externally exposed when the charging base is in use, it is possible to provide a cleanly styled charging base with smooth lines, and additionally to effectively use dead space in the case where themount portion 12 is formed inclined. - In a mobile device charging base according to a ninth aspect of the present invention, the
mount portion 12 can have a substantially U shape in section. According to this charging base, since a mobile device can be placed onto the mount portion even when the mobile device is inclined to some extent, users can easily place the mobile device onto the charging base. In addition, since a mobile device can be moved with wobbling or sliding on the mount portion by its own weight, the mobile device is likely to be placed at a proper orientation. - A mobile device and charging base system according to a tenth aspect of the present invention includes a
mobile device 50, and a chargingbase 10. Themobile device 50 has a device case, a rechargeable battery, and aninduction coil 51. The rechargeable battery is detachably attached to the device case. Theinduction coil 51 charges the rechargeable battery by induced electric power. The chargingbase 10 has abase case 11, amount portion 12, apower supply coil 21, and apower supply 22. Themount portion 12 is formed in a recessed shape in section on the surface of thebase case 11, and can detachably hold themobile device 50 at a predetermined position. Thepower supply coil 21 is arranged in proximity to and inside a recessed bottom surface of themount portion 12, and can be electromagnetically coupled to theinduction coil 51 of themobile device pack 50 that is placed on themount portion 12. Thepower supply 22 is connected to thepower supply coil 21. The chargingbase 10 has a cut-outportion 85 that is formed in a surface of themount portion 12 by cutting out a part of thebase case 11. This surface of the mount portion extends along the recessed bottom surface of themount portion 12, and intersects a mount surface of themobile device 50. The cut-offportion 85 communicates with the outside. According to this mobile device and charging base system, even if a mobile device has a protruding member that protrudes from the lower surface of the mobile device, a protruding portion can be brought in the cut-out portion. Thus, the mobile device can be properly placed so that the back surface of the mobile device is arranged in contact with the mount portion. Therefore, it is possible to appropriately charge a battery of the mobile device. Also, since the cut-out portion communicates with the mount portion that receives the mobile device, the wall of the mount portion that surrounds the mobile device does not exist in this communicating part. Thus, the surface of the mobile device can be exposed. Accordingly, this communicating part can dissipate heat. Therefore, it is possible to suppress that heat is stored in the mobile device in charging/discharging operation. As discussed above, although the mount portion required for electromagnetic induction can be arranged in contact with the mobile device, a part of the surface of the mount portion is cut out that is not required for electromagnetic induction. As a result, it is possible to ensure heat dissipation in addition to appropriate electromagnetic induction. - In a mobile device and charging base system according to an eleventh aspect of the present invention, an option unit OU can be coupled to the device case of the
mobile device 50. In addition, themount portion 12 of the chargingbase 10 can be designed so that thepower supply coil 21 is electromagnetically coupled to theinduction coil 51 when themobile device 50 with the option unit OU coupled thereto is placed on themount portion 12. Themount portion 12 of the chargingbase 10 can receive aspacer 90 that adjusts the position of themobile device 50 so that thepower supply coil 21 is electromagnetically coupled to theinduction coil 51 even when themobile device 50 without the option unit OU is placed on themount portion 50. According to this mobile device and charging base system, even in the entire length of a mobile device is changed by attachment/detachment of the option unit, since the size of the mount portion can be changed by shifting the bottom of the mount portion upward/downward by attachment/detachment of the spacer, it is possible to appropriately charge a battery of the smaller mobile device with or without the option unit. - The above and further objects of the present invention as well as the features thereof will become more apparent from the following detailed description to be made in conjunction with the accompanying drawings.
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FIG. 1 is a perspective view showing a mobile device charging base according to an embodiment of the present invention; -
FIG. 2 is a perspective view showing the charging base shown inFIG. 1 with a spacer being attached to a left mount portion of the charging base; -
FIG. 3 is a perspective view showing the charging base shown inFIG. 1 as viewed from the bottom side; -
FIG. 4 is a perspective view showing the charging base shown inFIG. 3 with the spacer being mounted to a upper-side (as viewed in the Figures) spacer accommodation portion of the charging base; -
FIG. 5 is a perspective view showing the charging base and electric devices placed on the charging base with the spacers shown inFIG. 2 being attached to the mount portions; -
FIG. 6 is a perspective view showing the charging base and the electric devices shown inFIG. 5 with the electric devices being covered by covering members; -
FIG. 7 is a perspective view showing the charging base and the electric devices shown inFIG. 5 with option units being attached to the electric devices; -
FIG. 8 is a perspective view showing the charging base and the electric devices with option units shown inFIG. 7 with the electric devices being covered by covering members; -
FIG. 9 is an exploded perspective view showing the charging base shown inFIG. 1 with an upper base case being removed from a lower base case; -
FIG. 10 is a cross-sectional view of the charging base and the electric device taken along a line X-X shown inFIG. 5 ; -
FIG. 11 is a cross-sectional view of the charging base and the electric device taken along a line XI-XI shown inFIG. 6 ; -
FIG. 12( a) is a perspective view showing a mobile device having neither the option unit nor the covering member; -
FIG. 12( b) is a perspective view showing the mobile device having the option unit without the covering member; -
FIG. 13( a) is a perspective view showing a mobile device having the covering member without the option unit; -
FIG. 13( b) is a perspective view showing the mobile device having the option unit and the covering member; -
FIG. 14 is a perspective view of the spacer as viewed from the top side; -
FIG. 15 is a perspective view of the spacer as viewed from the back side; -
FIG. 16 is a vertically cross-sectional view showing a charging base with a light guiding member according to a modified embodiment, and the mobile device; -
FIG. 17 is a block circuit diagram of the mobile devices and the charging base; -
FIG. 18 is a perspective view showing the mobile device with a battery pack being removed from the mobile device; -
FIG. 19 is a perspective view showing the battery pack shown inFIG. 18 as viewed from the bottom side; -
FIG. 20 is an exploded perspective view showing the battery pack shown inFIG. 19 ; -
FIG. 21 is a perspective view showing a charging base and a mobile device that have been developed by the present applicant; and -
FIG. 22 is a cross-sectional view of the charging base and the electric device taken along a line XXII-XXII shown inFIG. 21 . - The following description will describe embodiments according to the present invention with reference to the drawings. It should be appreciated, however, that the embodiments described below are illustrations of a mobile device charging base and a mobile device and charging base system to give a concrete form to technical ideas of the invention, and a mobile device charging base and a mobile device and charging base system of the invention are not specifically limited to description below. Furthermore, it should be appreciated that the members shown in claims attached hereto are not specifically limited to members in the embodiments. Unless otherwise specified, any dimensions, materials, shapes and relative arrangements of the members described in the embodiments are given as an example and not as a limitation. Additionally, the sizes and the positional relationships of the members in each of drawings are occasionally shown larger exaggeratingly for ease of explanation. Members same as or similar to those of this invention are attached with the same designation and the same reference numerals, and their description is omitted. In addition, a plurality of structural elements of the present invention may be configured as a single part that serves the purpose of a plurality of elements, on the other hand, a single structural element may be configured as a plurality of parts that serve the purpose of a single element. Also, the description of some of examples or embodiments may be applied to other examples, embodiments or the like.
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FIGS. 1 to 20 show a charging base and mobile devices according to an embodiment of the present invention.FIG. 1 is a perspective view of the charging base for the mobile devices.FIG. 2 is a perspective view showing a perspective view showing the charging base shown inFIG. 1 with a spacer being mounted to a left mount portion of the charging base.FIG. 3 is a perspective view showing the charging base shown inFIG. 1 as viewed from the bottom side.FIG. 4 is a perspective view showing the charging base shown inFIG. 3 with the spacer being mounted to an upper-side (as viewed in the Figures) spacer accommodation portion of the charging base.FIG. 5 is a perspective view showing the charging base and electric devices placed on the charging base with the spacers shown inFIG. 2 being attached to the mount portions. InFIG. 5 , an option unit is not attached to the mobile device, and a covering member does not cover the mobile device.FIG. 6 is a perspective view showing the charging base and the electric devices shown inFIG. 5 with the electric devices being covered by covering members and placed on the charging base.FIG. 7 is a perspective view showing the charging base and the electric devices shown inFIG. 5 with option units being attached to the electric devices without using a spacer.FIG. 8 is a perspective view showing the charging base and the mobile devices with option units shown inFIG. 7 with the mobile devices being covered by covering members and placed on the charging base.FIG. 9 is an exploded perspective view showing the charging base shown inFIG. 1 with an upper base case being removed from a lower base case.FIG. 10 is a cross-sectional view of the charging base and the electric device taken along a line X-X shown inFIG. 5 .FIG. 11 is a cross-sectional view of the charging base and the electric device taken along a line XI-XI shown inFIG. 6 .FIG. 12( a) is a perspective view showing a mobile device having neither the option unit nor the covering member.FIG. 12( b) is a perspective view showing a mobile device having the option unit without the covering member.FIG. 13( a) is a perspective view showing a mobile device having the covering member without the option unit.FIG. 13( b) is a perspective view showing a mobile device having the option unit and the covering member.FIG. 14 is a perspective view of the spacer as viewed from the top side.FIG. 15 is a perspective view of the spacer as viewed from the back side.FIG. 16 is a vertically cross-sectional view showing a charging base with a light guiding member according to a modified embodiment, and the mobile device.FIG. 17 is a block circuit diagram of the mobile devices and the charging base.FIG. 18 is a perspective view showing the mobile device with battery packs being removed from the mobile device.FIG. 19 is a perspective view showing the battery pack shown inFIG. 18 as viewed from the bottom side.FIG. 20 is an exploded perspective view showing the battery pack shown inFIG. 19 . - The illustrated
charging base 10 includes apower supply coil 21, apower supply 22, and abase case 11 that accommodates thepower supply coil 21 and thepower supply 22. Thebase case 11 is composed of two parts of upper andlower base cases FIG. 9 , etc. The outward appearance of thebase case 11 is a substantially triangular prism shape as shown inFIGS. 1 to 8 .Mount portions 12 are formed on an inclined surface of the triangular prism shape. The illustratedexemplary charging base 10 has twomount portions mobile devices mount portions mount portions 12 are formed in a recessed shape in section. Themobile devices 50 are detachably mounted to themount portions 12, and can be charged. The charging operation is conducted in a non-contact manner by using electromagnetic coupling between aninduction coil 51 and thepower supply coil 21 so that terminals are not exposed. Thepower supply coil 21 is arranged inside the base case 11 (on the interior side of the recessed bottom surface of the mount portion 12). Themobile device 50 includes theinduction coil 51 to be electromagnetically coupled to thepower supply coil 21. - The
mobile device 50 includes a device case, a battery pack, and theinduction coil 51. The battery pack is detachably attached to the device case, and includes rechargeable batteries. Theinduction coil 51 that charges the rechargeable batteries by induced electric power. The material and the shape of the device case can be suitably designed depending on the applications and the like of mobile devices. For example, the device case can be formed of polycarbonate, or the like. An option unit OU can be coupled to the device case. When themobile device 50 is detachably placed onto themount portion 12 of thebase case 11, the chargingbase 10 can charge thebatteries 54 of themobile device 50. - The
mobile device 50 includes theinduction coil 51, and thebattery 54 to be charged by electric power transmitted to theinduction coil 51, as shown inFIGS. 10 , 11 and the like. Various types of devices can be used as themobile device 50. Examples of themobile device 50 can be provided by remote control unit for operating electronic devices such as video game electronic devices, cordless handset, mobile phone, mobile terminal, PDA, smart phone, pager, portable music player, and the like. The option unit OU is refers to as an external device that can be coupled to themobile device 50, and changes the entire length of the mobile device when being coupled to themobile device 50. Examples of the option unit OU can be provided by a sensor for improving the position detecting accuracy of a game controller, an additional battery for increasing battery run time of a mobile phone, etc, a TV tuner, an electronic money communication unit, and the like.FIG. 12 shows an exemplary outward appearance of the mobile device.FIG. 12( a) shows the mobile device without an option unit.FIG. 12( b) shows the mobile device with an option unit. - In addition, a covering
member 40 can be attached to the exterior of themobile device 50. The coveringmember 40 can protect themobile device 50 from shock in accidental drop, collision and the like, and can provide non-slip effect when users grasp themobile device 50.FIG. 13 shows themobile device 50 with the coveringmember 40 being coupled to themobile device 50.FIG. 13( a) shows the mobile device having the covering member without the option unit.FIG. 13( b) shows the mobile device having the option unit and the covering member. - The
mount portion 12 to which themobile device 50 is mounted preferably has a substantially U shape in section. In this case, since themobile device 50 can be placed onto themount portion 12 even when themobile device 50 is inclined to some extent, users can easily place themobile device 50 onto the chargingbase 10. In addition, since themobile device 50 can be moved with wobbling or sliding on themount portion 12 by its own weight, themobile device 50 is likely to be placed at a proper orientation. In the case where thebase cases 11 have a right-triangular shape, themount portion 12 is preferably formed on an inclined side of the right-triangular shape. In this case, since themount portion 12 is inclined, when users can place themobile device 50 onto the chargingbase 10, the users can place themobile device 50 onto the chargingbase 10 from the top side and the transverse sides. Therefore, the chargingbase 10 has excellent usability. - The
mount portion 12 has a bottom surface that serves as astopper wall 14. Thestopper wall 14 supports themobile device 50. The top side of the mount portion opens. Accordingly, the mobile device can be held protruding upward from the charging base. In this case, since the upward protruding amount can be adjusted, even a long mobile device can be placed on the mount portion. In order to charge even a long mobile device when the long mobile device can be placed on the mount portion, more specifically, in order that theinduction coil 51 of the mobile device can be positioned at thepower supply coil 21 included in the chargingbase 10, themount portion 12 can adjust the height of the mobile device by using aspacer 90. Specifically, as shown inFIG. 2 , thespacer 90 is prepared that has a predetermined height so that, when thespacer 90 is attached to the bottom surface of themount portion 12, the actual height of the bottom surface of themount portion 12 is raised so that theinduction coil 51 of each of mobile devices with different lengths is brought to the same position as thepower supply coil 21. In the case where a spacer is prepared that has an adjusted height depending on the length of a mobile device, one charging base can suitably receive mobile devices with different lengths. - The spacer is used to raise a short mobile device. For this reason, it is preferable that the mount portion suitably receives the longest mobile device when the spacer is not used. In the case of a shorter mobile device, the spacer is used to raise the actual height of the bottom surface of the mount portion so that the shorter mobile device is positioned at the predetermined position.
- The spacer can provide one charging base with compatibility between mobile devices with different lengths, and can improve the usability of the charging base. The mobile devices with different lengths include not only mobile devices with different physical, dimensional overall lengths, but also mobile devices with different lengths resulting from an option unit coupled to a mobile device. In the case where the spacer is provided, the shape and dimension of the
mount portion 12, the positional arrangement of thepower supply coil 21 inside themount portion 12, and the like are designed so that, when a mobile device elongated by the option unit OU coupled to the mobile device is placed on themount portion 12, theinduction coil 51 of the elongated mobile device is electromagnetically coupled to thepower supply coil 21 inside themount portion 12. In this case, when a shorter mobile device without the option unit OU is placed on themount portion 12, the spacer is used to raise the actual height of the bottom surface of themount portion 12 so that theinduction coil 51 of the shorter mobile device is electromagnetically coupled to thepower supply coil 21 inside themount portion 12. In other words, in the case where the spacer is dimensioned so that its height is same as the option unit, the spacer can match the height of a mobile device without the option unit with the height of a mobile device with the option unit. Accordingly, one charging base can charge a mobile device irrespective of whether the option unit is coupled to the mobile device or not. -
FIGS. 14 and 15 show an exemplary outward appearance of thespacer 90. The illustratedspacer 90 has substantially rectangular-shapedblock portions 91, and acoupling portion 92. The substantially rectangular-shapedblock portions 91 are coupled by thecoupling portion 92. Thus, the entire shape of thespacer 90 is a substantially U shape. Theblock portions 91 and thecoupling portion 92 are integrally formed of resin such as plastic. As shown inFIG. 2 , theblock portions 91 are preferably designed to havesurfaces 97 coplanar with interior wall surfaces 89 of a later-discussed cut-outportion 85 when thespacer 90 is attached to themount portion 12. The interior wall surfaces 89 of thebase case 11 face each other. Accordingly, thespacer 90 does not affect the action of the cut-outportion 85 even when thespacer 90 is attached to the mount portion. Therefore, the charging base can provide the effect by the cut-outportion 85. That is, even in the case where thespacer 90 is attached to the mount portion, the mount portion can communicate with the cut-outportion 85 via thespacer 90. Thus, the cut-outportion 85 can accommodate a protrusion that protrudes from the bottom or back surface of themobile device 50. Accordingly, such a protrusion does not interfere with themount portion 12 when themobile device 50 is mounted to themount portion 12. Therefore, themobile device 12 can be appropriately electromagnetically coupled to the charging base. -
Positioning protruding sections 93 are formed on thecoupling portion 92 of thespacer 90. Thepositioning protruding sections 93 are formed in a shape that can be inserted into positioning recessedsections 87 formed on a later-discussed second cut-outportion 86. Thus, thespacer 90 can be positioned and mounted into a predetermined position of themount portion 12 by thepositioning protruding sections 93 and the positioning recessed sections. The exemplarypositioning protruding sections 93 shown inFIGS. 14 and 15 have a triangular shape as an extension part of each of thesurfaces 97 of theblock portions 91 that face each other. The triangularpositioning protruding sections 93 are suitable for adjusting thespacer 90 to a predetermined orientation when thespacer 90 is inserted into positioning recessed sections even if an insertion direction of thespacer 90 is slightly deviated from the predetermined insertion direction. - The
coupling portion 92 coupled between thepositioning protruding sections 93 includes a plate-shaped connectingsection 95 that is formed in a wall shape protruding in a direction so that the plate-shaped connectingsection 95 closes the second cut-outportion 86. AU-shaped slit 94 may be formed in the connectingsection 95. In the case where theslit 94 is formed, thecoupling portion 92 does not completely close the second cut-outportion 86. Accordingly, theslit 94 allows narrow members such as cable or cord can pass to pass through the second cut-outportion 86. In particular, in the case where a strap hangs from the back surface of a mobile device, theslit 94 allows the strap to pass through the second cut-out portion. Therefore, it is possible to prevent the strap is caught when in free. - The
spacer 90 has a symmetrical shape both in left-and-right and front-and-back directions. Thus, thespacer 90 can be attached to themount portion 12 in any orientations. Accordingly, the attachment direction of thespacer 90 is not limited to a particular orientation. Therefore, thespacer 90 can be suitably used for small children and elderly people. - The
spacer 90 is held in themount portion 12 by fitting thepositioning protruding sections 93 into the positioning recessedsections 87 as shown inFIG. 2 . In order to detach thespacer 90 from the charging base 10 (or a spacer accommodation portion 96), users can catch thecoupling portion 92 with their finger and thumb. Therefore, users can easily detach thespacer 90 from themount portion 12. Although the exemplary shape of the spacer is described, the spacer can have various shapes. Thespacer 90 can be formed of plastic or the like. - The
base case 11 has thespacer accommodation portions 96 that are formed to accommodate thespacers 90. Thespacer accommodation portions 96 are preferably formed in the bottom surface of thebase case 11. Accordingly, thespacer accommodation portions 96 are not externally exposed when the charging base is in use. Therefore, the charging base can have a smooth and simple outward appearance.FIGS. 3 and 4 show the exemplaryspacer accommodation portions 96. The exemplary charging base has twomount portions 12. Correspondingly, twospacer accommodation portions 96 are formed to accommodate twospacers 90. In order to accommodate thespacer 90, the exemplaryspacer accommodation portion 96 is formed in a recessed shape that has substantially the same size as external shape of thespacer 90. Thespacer 90 is fitted into thespacer accommodation portion 96. Thespacer 90 can be held in thespacer accommodation portion 96 by elastically deforming thespacer 90. Sincebase case 11 has the accommodation portions for accommodating thespacers 90, users can store thespacers 90 together with thebase case 11. Therefore, it is possible to reduce the possibility of losing the spacers when the spacers are out of use. - In the case where the
mount portions 12 are formed on an inclined surface of thebase case 11 that has a triangular shape as viewed from the lateral side as shown inFIGS. 3 and 4 , thespacer accommodation portions 96 are preferably formed on a side opposite to themount portion 12 side of the bottom surface of thebase case 11. In this case, it is possible to effectively use dead space of thetriangular base case 11. - The charging
base 10 has the cut-outportions 85 each of which is formed in a surface of themount portion 12 intersecting a mount surface of themobile device 50 by cutting out a part of thebase case 11 so that the cut-offportion 85 communicates with the outside. Specifically, the surface of themount portion 12 intersecting the mount surface of themobile device 50 is thestopper wall 14. Since such the cut-outportion 85 is formed, even if themobile device 50 includes a member that protrudes from the lower surface of themobile device 50, when this protruding member is brought in the cut-outportion 85, it is possible to prevent positional deviation between theinduction coil 51 and thepower supply coil 21 due to upward deviation of the bottom surface of themobile device 50 from thestopper wall 14. Therefore, it is possible to prevent that theinduction coil 51 and thepower supply coil 21 are insufficiently electromagnetically coupled to each other. For example, in the case where a strap is attached to the lower surface of the mobile device, when the attachment part of the strap is brought in the cut-outportion 85, the mobile device can be placed to the mount portion with the bottom surface of the mobile device being in contact with thestopper wall 14, without the strap being caught in the gap between the bottom surface of the mobile device and thestopper wall 14. In addition, since the bottom surface of the mobile device is partially externally exposed from the cut-outportion 85, it is possible to dissipate heat from the exposed part of the bottom surface of the mobile device. - In addition, the second cut-out
portion 86 is formed in the recessed bottom surface of each of themount portions 12. The second cut-outportion 86 communicates with the cut-outportion 85. Thus, the cut-out part extends from the edge to the back surface of thebase case 11. Specifically, the cut-outportion 85 extends in a part of the recessed bottom surface from the edge of the surface intersecting the mount surface so that the edge of thebase case 11 opens in a substantially rectangular U shape. Accordingly, even if a mobile device has a protruding part that protrudes from the back surface of the mobile device, such a protruding part can be guided to the second cut-outportion 86. Therefore, it is possible to prevent upward deviation of the back surface of the mobile device from the recessed bottom surface of themount portion 12, and to appropriately charge the mobile device. In addition, since the externally-exposed area of the mobile device can be increased by the cut-out part that extends from the back surface to the bottom surface of the mobile device, the heat dissipation effect can be improved. Heat is generated by electromagnetic coupling between theinduction coil 51 and thepower supply coil 21, and the back surface of the mobile device will accumulate the heat. In the case where the cut-out part is formed on the back surface of the charging base so that the cut-out part communicates with the outside, a path can be produced that allows the heat to be externally dissipated. Therefore, it is possible to improve the heat dissipation. As discussed above, although themount portion 12 required for electromagnetic induction can be arranged in place and in contact with the mobile device, a part of the surface of themount portion 12 is cut out that is not required for electromagnetic induction. As a result, it is possible to improve the heat dissipation in addition to appropriate electromagnetic induction. - The second cut-out
portion 86 communicates with the back surface of the base case. The second cut-outportion 86 penetrates substantially the center of thestopper wall 14 in a length direction of themount portion 12, and is continuously formed in a rectangular shape extending in a part of the recessed bottom surface as shown inFIG. 1 . A secondinclined surface 88 is formed at end of the second cut-outportion 86 extending in the recessed bottom surface. The secondinclined surface 88 is inclined at an inclination angle greater than the inclination angle of the recessed bottom surface, and substantially smoothly extends from the recessed bottom surface to thelower base case 11B. In the case where the secondinclined surface 88 is continuously formed from the recessed bottom surface and inclined at the inclined angle greater than the secondinclined surface 88, a protruding member protruding from the mobile device back surface can be smoothly guided to the second cut-outportion 86. - In addition, the positioning recessed
sections 87 can be formed on the opposed inside wall surfaces 89 of thebase case 11 that define the second cut-outportion 86 as shown inFIG. 1 . Thespacer 90 engages with the positioning recessedsections 87. The positioning recessedsections 87 correspond to thepositioning protruding sections 93, which protrude from thecoupling portion 92 of thespacer 90. The positioning recessedsections 87 are formed in a recessed shape into which thepositioning protruding section 93 can be fitted. Accordingly, thespacer 90 can be easily attached in place at a predetermined orientation. - The charging
base 10 is now described. Charging bases 10 shown inFIGS. 1 to 20 have themount portion 12 on theupper base case 11A. Themount portion 12 of theupper base case 11A has a U-shaped groove as acurved bottom surface 13. In themount portion 12 of the illustratedupper base case 11A, the longitudinal direction of thecurved bottom surface 13 of U-shaped groove is inclined upward toward the back of theupper base case 11. Thestopper wall 14 is arranged on the lower end of themount portion 12. Thismount portion 12 has a U-shaped groove in a cross-sectional view as viewed from the longitudinal direction of themount portion 12. Accordingly, themount portion 12 can accurately guide themobile device 50 to a predetermined position. Thisupper base case 11A is formed of plastic by molding in a shape that provides a pair ofside walls 15 on the both sides of themount portion 12, and thestopper wall 14 on the lower end of themount portion 12. - In addition, the
upper base case 11A can have alight guide 31 that is externally exposed on thestopper wall 14. Thelight guide 31 guides light emitted by anLED 30, and emits the light from thelight guide 31 outward. Thelight guide 31 arranged in an exemplary charging base is shown by a diagonally shaded area in the cross-sectional view ofFIG. 16 . Thelight guide 31 is formed of transparent plastic. Thelight guide 31 is secured on thelower base case 11B. TheLED 30 is arranged on acircuit board 20 secured in thebase case 11. Thelight guide 31 guides the light from theLED 30 to an exposedportion 31A arranged on the end of thelight guide 31, and emits the light from the exposedportion 31A outward. The end of the exposedportion 31A has an exposed part that is externally exposed on the outside of thestopper wall 14, and an exposed part that is externally exposed on the inside (i.e., themount portion 12 side) of thestopper wall 14. Thus, the light from theLED 30 is emitted from the outside and inside of thestopper wall 14. The light emitted from the inside of thestopper wall 14 illuminates the coveringmember 40 of themobile device 50 so that the coveringmember 40 emits light as shown inFIG. 16 . - The charging
base 10 includes thepower supply coil 21, which is arranged inside thecurved bottom surface 13 of theupper base case 11A, as shown inFIGS. 9 to 11 . Thepower supply coil 21 is a flat coil consisting of wire wound in a flat surface. Thepower supply coil 21 is arranged in proximity to the interior surface of thecurved bottom surface 13. Thepower supply coil 21 is wound in an elongated loop shape that extends in the longitudinal direction of the U-shaped groove so that electric power can be transmitted in an elongated area that extends in the longitudinal direction. Although the illustratedpower supply coil 21 is described as a flat coil, the power supply coil can be a planar coil that is curved along the curved surface on the both side of the curved bottom surface. - A
shield layer 23 is arranged on a side opposite to the induction coil 51 (the lower side relative to thepower supply coil 21 in the Figures) to electromagnetically shield thepower supply coil 21. Theshield layer 23 is formed of high-permeability metal or ferrite. Theshield layer 23 electromagnetically shields thepower supply coil 21 on the side opposite to theinduction coil 51. Theshield layer 23 and thepower supply coil 21 are secured to asupport base 16 that is formed of plastic and arranged in thebase case 11. Thecircuit board 20 is between thesupport base 16 and thelower base case 11B. Thesupport base 16 is secured to thelower base case 11B. Thus, theshield layer 23 and thepower supply coil 21 are arranged in predetermined positions of thebase case 11. Thissupport base 16 has aninclined surface 16A that extends along thecurved bottom surface 13. Theshield layer 23 and thepower supply coil 21 are laminated on and secured to theinclined surface 16A. - The
power supply coil 21 is connected to the high-frequency power supply 22 mounted on thecircuit board 20 as shown in the circuit diagram ofFIG. 17 . The high-frequency power supply 22 converts DC electric power provided from an AC/DC adaptor 25 into high-frequency electric power, and provides the converted electric power to thepower supply coil 21. The high-frequency power supply 22 includes a circuit that cuts off output of high-frequency electric power when thebattery 54 in themobile device 50 is fully charged. Themobile device 50 includes a chargingcircuit 52 that detects that thebattery 54 of themobile device 50 is fully charged. The high-frequency power supply 22 communicates with the chargingcircuit 52 of themobile device 50. The high-frequency power supply 22 can detect based on the communication with the chargingcircuit 25 that thebattery 54 of themobile device 50 is fully charged. Thus, the high-frequency power supply 22 cuts off the output when thebattery 54 in themobile device 50 is fully charged. - Since the
aforementioned charging base 10 includes twomount portions 12, twomobile devices mount portions 12 and can be charged. Needless to say, the number of the mount portions is not limited to two, but can be one, or three or more. In the case where a plurality of charging bases can be connected to each other, the number of the mobile devices can be adjusted that are placed on the connected charging bases. For example, the charging bases can be coupled to each other side by side. In this case, each charging base can include a coupler that detachably couples one charging base to another charging base arranged beside the one charging base. - The circuit diagram of the high-
frequency power supply 22 in the chargingbase 10 is shown inFIG. 17 . Thepower supply 22 is provided with electric power from the AC/DC adaptor 25 via a power supply connector 26. - The high-
frequency power supply 22 charges thebattery 54 of themobile device 50. That is, the high-frequency power supply 22 energizes thepower supply coil 21. An exemplary procedure is now described thatcharges batteries mobile devices FIG. 17 . First, DC electric power is provided from the AC/DC adaptor 25 to thepower supply 22A of thefirst mount portion 12A. Thepower supply 22A of thefirst mount portion 12A energizes thepower supply coil 21A with the DC electric power provided from the AC/DC adaptor 25, and charges the battery MA of the firstmobile device 50A. When thebattery 54A of the firstmobile device 50A is fully charged, thepower supply 22A of thefirst mount portion 12A stops energizing thepower supply coil 21A, and the DC electric power is provided to thesecond mount portion 12B. Thepower supply 22B of thesecond mount portion 12B energizes the power supply coil 216 with the provided DC electric power provided, and charges thebattery 54B of the secondmobile device 50B. When the battery MB of the secondmobile device 50B is fully charged, thepower supply 22B of thesecond mount portion 12B stops energizing thepower supply coil 21B, and stops charging thebattery 54B. - In the case of the circuit in that
batteries 54 of a plurality ofmobile devices 50 are charged one mobile device after another, thebatteries 54 of themobile devices 50 can be fully charged without increasing output of electric power from the AC/DC adaptor 25. - The
mobile device 50 has acurved back surface 53 to be placed on themount portion 12 of the chargingbase 10. Thecurved back surface 53 is formed in a curved shape that extends along thecurved bottom surface 13 of U-shaped groove as shown inFIGS. 10 and 11 . Theinduction coil 51 is arranged inside thecurved back surface 53. Theinduction coil 51 is wound in a curved plane extending along thecurved back surface 53.FIG. 13 is the perspective view showing themobile device 50 covered by thedetachable covering member 40. The coveringmember 40 covers a surface part of themobile device 50 withoutoperation portions 65 such as switches arranged on the case surface of themobile device 50 so that theoperation portions 65 are externally exposed. The illustratedmobile device 50 includes theoperation portions 65 such as switches, which are arranged in parts of the front and back surfaces. The covering member covers substantially the whole surface of the back surface of themobile device 50 without theoperation portions 65 except an upper switch portion of themobile device 50, the outer peripheral surface of theMobile device 50, and the front outer peripheral part of themobile device 50. The outer peripheral surface of themobile device 50 includes the both side surfaces, and upper and lower surfaces. The coveringmember 40 can elastically contract, and can tightly cover surfaces of themobile device 50. The coveringmember 40 can elastically expand, and can be removed from themobile device 50. Themobile device 50 can be placed on themount portion 12 of the chargingbase 10 to charge thebattery 54 included in themobile device 50 with the coveringmember 40 covering themobile device 50, or without the covering member. The coveringmember 40 is formed of elastic soft plastic, or natural or synthetic rubber, and protects themobile device 50 from shock in accidental drop, collision and the like. When themobile device 50 with or without the coveringmember 40 is placed on themount portion 12 of the chargingbase 10, as shown inFIGS. 5 to 8 , themobile device 50 is inclined and the top-and-bottom longitudinal direction of themobile device 50 extends toward the back side of the chargingbase 10 with an end of themobile device 50 located on the back side of the charging base being located on the top side of the chargingbase 50. In this state, the lower end ofmobile device 50 is supported by thestopper wall 14. - The
mobile device 50 includes theinduction coil 51 inside thecurved back surface 53. Theinduction coil 51 is wound in a curved plane extending along thecurved back surface 53. Themobile device 50 shown inFIGS. 10 , 11, and 18 has abattery accommodating portion 61. Thebattery accommodating portion 61 can accommodate a plurality ofcylindrical batteries 54 in parallel to each other. Abattery pack 70 is detachably mounted to thebattery accommodating portion 61. Thebattery accommodating portion 61 is arranged opening on the back surface of themobile device 50. After thebattery pack 70 is mounted to thebattery accommodating portion 61, the opening of thebattery accommodating portion 61 is closed. The illustratedmobile device 50 includes thebattery 54 and theinduction coil 51 in thebattery pack 70. Theinduction coil 51 is accommodated inside thecurved back surface 53. Thebattery accommodating portion 61 has a shape that can accommodate a plurality of AA batteries (two AA batteries inFIGS. 10 , 11 and 18) 54B shown by dashed lines inFIGS. 10 , 11 and 18. Thebattery pack 70 has an outward shape that can be detachably mounted to thebattery accommodating portion 61 instead of a plurality of AA batteries (two AA batteries inFIGS. 10 , 11 and 18) 546. The thus-configuredmobile device 50 can be conveniently used both with theAA batteries 54B and therechargeable battery pack 70 as shown inFIG. 18 . Needless to say, it is not always necessary for the mobile device to include the detachable battery pack. The mobile device can include a rechargeable battery that cannot be detached from the mobile device. The mobile device can include the induction coil that is arranged inside the curved back surface and provides charging electric power to this battery. In the case where theAA batteries 54B are mounted to thebattery accommodating portion 61, the opening of themobile device 50 is closed by a detachable lid 63 as shown by the dashed lines inFIG. 18 . The detachable lid 63 is detachably attached to the opening of thebattery accommodating portion 61. After the detachable lid 63 is removed, the AA batteries 548 can be mounted to thebattery accommodating portion 61. After theAA batteries 54B can be mounted, the detachable lid 63 is attached to themobile device 50 so that the opening of thebattery accommodating portion 61 is closed. - The
battery pack 70 is mounted to thebattery accommodating portion 61 after the detachable lid 63 is removed. Thebattery pack 70 to be mounted to thebattery accommodating portion 61 has a detachable lid configured integrally with thebattery pack 70. When thisbattery pack 70 is mounted to thebattery accommodating portion 61, the opening of thebattery accommodating portion 61 is closed. Thebattery pack 70 is shown inFIGS. 19 and 20 .FIG. 20 is an exploded perspective view showing thebattery pack 70 shown inFIG. 19 .FIGS. 10 and 11 are the cross-sectional views of themobile device 50 placed on the chargingbase 10. The illustratedbattery pack 70 includes abattery case 71, twoAAA batteries 54A, abattery holder 72, acircuit board 73, abracket 74, ashield layer 75, theinduction coil 51, and aback surface cover 76. Thebattery case 71 accommodates thebatteries 54. The AAA batteries MA are accommodated in thebattery case 71. Thebattery holder 72 holds theAAA batteries 54A in place. Thecircuit board 73 is arranged on thebattery holder 72, and is connected to thebatteries 54. Thebracket 74 is arranged on thecircuit board 73. Theshield layer 75 is arranged on thebracket 74. Theinduction coil 51 is arranged on theshield layer 75. Theback surface cover 76 is arranged on theinduction coil 51. Theback surface cover 76, thebracket 74, and thebattery holder 72 are formed of insulating plastic. - The
back surface cover 76 is formed in a curved plane shape that extends along thecurved back surface 53 of themobile device 50. Thus, the exterior and interior surfaces of theback surface cover 76 are curved. The illustrated backsurface cover 76 is used instead of the detachable lid 63 for closing thebattery accommodating portion 61. For this reason, theback surface cover 76 has an external shape capable of closing the opening of thebattery accommodating portion 61, in other words, the same exterior shape as the detachable lid 63. The illustratedbattery pack 70 is mounted to thebattery accommodating portion 61 of themobile device 50 by means of theback surface cover 76. Interlocking hooks 77 are formed integrally with the upper end (the lower left side inFIG. 19 ) of theback surface cover 76. Anelastic hook 78 is formed integrally with the lower end (the upper right side inFIG. 19 ) of theback surface cover 76, and interlocks with the opening of thebattery accommodating portion 61. Thus, theback surface cover 76 can be detachably attached to the opening of thebattery accommodating portion 61. The retaining recessed portions 67 and 68 are formed on the upper and lower ends of thebattery accommodating portion 61 of thebattery accommodating portion 61. The interlocking hooks 77 and theelastic hook 78 can interlock with the retaining recessed portions 67 and 68. When users interlock the interlocking hooks 77 with the retaining recessed portions 67 and push thebattery pack 70 into thebattery accommodating portion 61, theelastic hook 78 can interlock with the retaining recessed portion 68. Thus, thebattery pack 70 can be securely mounted in thebattery accommodating portion 61. When users elastically deform theelastic hook 78 and detach theelastic hook 78 from the retaining recessed portion 68, thebattery pack 70 can be removed from themobile device 50.Tenon parts 79 are formed in central parts on the both side edges of theback surface cover 76 shown in the cross-sectional views ofFIGS. 10 and 11 . Thetenon parts 79 extend in the longitudinal direction of theback surface cover 76. Thetenon parts 79 can be fitted into guidingmortise parts 69 that are formed on the both side edges of the opening both sides of thebattery accommodating portion 61 formed in themobile device 50. Thus, theback surface cover 76 is reliably attached to the opening. - The
induction coil 51 is arranged on the interior surface of theback surface cover 76. Theinduction coil 51 is composed of copper wire as metal the surface of which is provided with an insulating film. The copper wire is wound in a plane. The wounded copper wire is deformed to expand along the curved interior surface of theback surface cover 76. Thus, theinduction coil 51 is arranged in proximity to the curved surface of theback surface cover 76. Theinduction coil 51 has an elongated loop shape that extends in the longitudinal direction of themobile device 50, in other words, the longitudinal direction of theAAA battery 54A to efficiently electromagnetically couple theinduction coil 51 to thepower supply coil 21. - The
shield layer 75 is laminated on the lower surface of theinduction coil 51 to magnetically shield thecircuit board 73 and thebatteries 54 from thepower supply coil 21. Theshield layer 75 is formed of high-permeability metal or ferrite, and prevents that high frequency of thepower supply coil 21 affects thecircuit board 73 and thebatteries 54. Theshield layer 75 has a curved shape that extends along theinduction coil 51, and is arranged in proximity to the back surface of theinduction coil 51. - The
bracket 74 is formed of plastic. A surface of thebracket 74 facing theback surface cover 76 is formed in a curved shape that extends along theback surface cover 76. A curved gap is arranged between this surface of thebracket 74 and the interior surface of theback surface cover 76. Theinduction coil 51 and theshield layer 75 are interposed between the surface of thebracket 74 and the interior surface of theback surface cover 76, and is secured in the gap. The back surface of thebracket 74, which faces thecircuit board 73, is flat. Alternatively, the back surface of thebracket 74 can have recessed parts that guide electronic components mounted on thecircuit board 73 so that thebracket 74 is arranged on thecircuit board 73. Positioningprotrusions 74 a are formed integrally with the surface of thebracket 74, and hold theinduction coil 51 in place. The positioning protrusions 74 a are guided into the inside hole of theelongated induction coil 51 so that theinduction coil 51 is held in place. The positioning protrusions of thebracket 74 shown inFIG. 19 are spaced away from each other in the longitudinal direction of the inside hole of theelongated induction coil 51, and can be arranged at the both ends of the inside hole of theelongated induction coil 51. Accordingly, the positioning protrusions can hold theinduction coil 51 in place. In addition, parts of thebracket 74 corresponding to thepositioning protrusions 74 a are formed thick, and serve as bosses that receive screws for fastening thebattery case 71. Fastening screws 81 pass through thebattery case 71, and are screwed into thepositioning protrusions 74 a of thebracket 74. Thus, thebattery case 71 is secured to thebracket 74. -
Electronic components 84 are mounted on thecircuit board 73. Theelectronic components 84 realize a charging circuit (not shown) that charges thebatteries 54 with electric power excited in theinduction coil 51. After converting high-frequency electric power excited in theinduction coil 51 into direct current, which can charge thebatteries 54, the charging circuit charges thebatteries 54. Theelectronic components 84 are mounted on a lower surface inFIG. 20 (an upper surface inFIGS. 10 and 11 ), in other words, the battery side of thecircuit board 73. - The
battery holder 72 holds a plurality of AAA batteries (two AAA batteries in the illustrated battery holder) 54B in place, and positions thecircuit board 73 in place. Thebattery holder 72 is formed of plastic, and has holding recessedportions 72 a that are arranged on a battery-facing surface to hold thebatteries 54. The illustratedbattery pack 70 includes twoAAA batteries 54A. Correspondingly, two holding recessedportions 72 a are arranged in parallel to each other extending along the cylindrical shape of theAAA batteries 54A. Thebattery pack 70 with theAAA batteries 54A can be mounted to thebattery accommodating portion 61 instead of theAA batteries 54B shown by the dashed lines inFIGS. 10 and 11 . TheAAA battery 54A has an outer diameter smaller than theAA battery 54B. Accordingly, as shown inFIGS. 10 and 11 , the distance between the center lines of theAAA batteries 54A is designed larger theAA batteries 54B mounted to thebattery accommodating portion 61. Thus, the gap between the center lines of theAAA batteries 54A can be wide. Anaccommodation space portion 82 is formed in this gap. Theelectronic components 84 mounted on thecircuit board 73 are arranged in theaccommodation space portion 82. That is, theAAA batteries 54A are arranged outside as far as possible so that theaccommodation space portion 82 between the batteries is increased. -
Peripheral walls 72 b are formed integrally with thebattery holder 72 on a board-facing surface of thebattery holder 72 that faces thecircuit board 73. Thecircuit board 73 can be arranged inside theperipheral walls 72 b, and held in place. Thecircuit board 73 is fitted into space inside theperipheral walls 72 b, and held in place. In addition, thebattery holder 72 has a recessedportion 72 c on the board-facing surface. The recessedportion 72 c can guideelectronic components 84 mounted on thecircuit board 73. Since the recessedportion 72 c is located between theadjacent batteries 54, it is possible to effectively use theaccommodation space portion 82 formed between thebatteries 54 to accommodate theelectronic components 84. - The
battery case 71 is formed of plastic in a box shape that can accommodate a plurality of AAA batteries (two AAA batteries in the illustrated battery case 71) 54A. Thebattery case 71 has an opening facing theback surface cover 76. The opening rims of the box-shapedbattery case 71 are coupled to theback surface cover 76 by a fit-in retaining structure or by welding. Thus, the opening ofbattery case 71 is closed by theback surface cover 76 so that the battery pack is assembled. A guidinggroove 71 a is formed on the bottom surface of thebattery case 71 shown in the cross-sectional view ofFIGS. 10 and 11 . The guidinggroove 71 a guides apartitioning wall 66 arranged in thebattery accommodating portion 61. Thepartitioning wall 66 is arranged between thebatteries 54 to accommodate theM batteries 54B in place. Holdingribs 71 b are formed integrally with thebattery case 71 on the both sides of the guidinggroove 71 a. The holdingribs 71 b can hold theAAA batteries 54A in place. TheAAA batteries 54A are held in place by interposing each of theAAA batteries 54A between each of the holdingribs 71 b and each of the side walls of thebattery case 71. In addition, thebattery case 71 hasterminal windows 71 c that opens to externally exposeoutput terminals 83. Thus, theoutput terminals 83 are externally exposed from theterminal windows 71 c. Theoutput terminals 83 of thebattery pack 70 can be in contact with power supply terminals 62 arranged in thebattery accommodating portion 61 so that electric power is provided to themobile device 50. The power supply terminals 62 are arranged at the same positions as terminals of theAA batteries 54B when theAA batteries 54B are accommodated in thebattery accommodating portion 61. Thus, thebattery pack 70 can be accommodated instead of theAA batteries 54B so that electric power is provided to themobile device 50 from thebattery pack 70. - The
aforementioned battery pack 70 is assembled by the following processes. - (1) The
batteries 54 are accommodated in thebattery case 71, and then thebattery holder 72 is placed on thebatteries 54 so that thebatteries 54 are held in place.
(2) Thecircuit board 73 and thebracket 74 are placed on thebattery holder 72. Subsequently, theshield layer 75 is placed on thebracket 74, and then theinduction coil 51 is placed to interpose theshield layer 75 between thebracket 74 and theinduction coil 51. Theinduction coil 51 is arranged in a predetermined position of thebracket 74. After that, thecircuit board 73, thebattery 54, and theinduction coil 51 are connected to each other. Theoutput terminals 83 connected to thecircuit board 73 is arranged in theterminal windows 71 c of thebattery case 71 on the interior side.
(3) The fastening screws 81 are brought to pass through thebattery case 71, and are screwed into thepositioning protrusions 74 a of thebracket 74. Thus, thebattery case 74 is secured to thebracket 71 so that abattery assembly 80 is configured.
(4) The opening rims of thebattery case 71 are coupled to theback surface cover 76 so that thebattery assembly 80 is secured to theback surface cover 76. - In the thus-configured mobile device and charging base system according to this embodiment, the
mobile device 50 can be covered by thedetachable covering member 40, and themount portion 12 of the chargingbase 10 has an inner shape that can receive themobile device 50 covered by the coveringmember 40. According to the thus-configured mobile device and charging base system, in either case where themobile device 50 is covered or not covered by the coveringmember 40, themobile device 50 can be guided to the predetermined position of themount portion 12 so that thepower supply coil 21 is arranged in proximity to theinduction coil 51. Therefore, it is possible to efficiently charge thebatteries 54 of themobile device 50. - As shown in
FIG. 10 , when themobile device 50 without the covering member is appropriately placed, the lowest part of thecurved bottom surface 13 of the chargingbase 10 aligns with and comes in contact with the lowest part of thecurved back surface 53 of themobile device 50. Since thecurved bottom surface 13 of the chargingbase 10 and thecurved back surface 53 of themobile device 50 have symmetrical shapes, when themobile device 50 is mounted to themount portion 12 of the chargingbase 10, themobile device 50 slides down by its weight and can be placed at the appropriated position. In the case where thecurved bottom surface 13 of the chargingbase 10 and thecurved back surface 53 of themobile device 50 are formed of a plastic material with small friction coefficient, themobile device 50 can slide down and can be thus placed at the appropriated position. - Also, in the case where the
mobile device 50 is covered by coveringmember 40 as shown inFIG. 11 , it possible to easily put themobile device 50 in place and to efficiently charge themobile device 50. The reason is that, when thecurved back surface 53 of themobile device 50 is placed onto thecurved bottom surface 13 of the chargingbase 10, themobile device 50 can be put in place as follows: - (1) When the lowest part of the
curved bottom surface 13 of the chargingbase 10 aligns with the lowest part of thecurved back surface 53 of themobile device 50, themobile device 50 can be suitably put in place.
(2) Since thecurved bottom surface 13 of the chargingbase 10 and thecurved back surface 53 of themobile device 50 have symmetrical shapes, when the center lines the chargingbase 10 and themobile device 50 align with each other, themobile device 50 can be suitably put in place.
(3) If the front surface of themobile device 50 is horizontally arranged in the right-and-left direction, themobile device 50 can be suitably put in place. - A charging base for the mobile device, and a charging base and mobile device system according to the present invention can be suitably used to charge game controller, cordless telephone, mobile phone, portable music player, and the like.
- It should be apparent to those with an ordinary skill in the art that while various preferred embodiments of the invention have been shown and described, it is contemplated that the invention is not limited to the particular embodiments disclosed, which are deemed to be merely illustrative of the inventive concepts and should not be interpreted as limiting the scope of the invention, and which are suitable for all modifications and changes falling within the scope of the invention as defined in the appended claims. The present application is based on Application No. 2009-237,766 filed in Japan on Oct. 14, 2009, the content of which is incorporated herein by reference.
Claims (11)
1. A charging base capable of charging a mobile device including an induction coil and a battery pack that includes a battery to be charged by electric power induced in this induction coil, the charging base comprising:
a base case;
a mount portion that is formed in a recessed shape in section on the surface of said base case, and can detachably hold the mobile device at a predetermined position;
a power supply coil that is arranged in proximity to and inside the recessed bottom surface of said mount portion, and can be electromagnetically coupled to the induction coil for the battery pack attached to said mobile device; and
a power supply that is connected to said power supply coil,
wherein a cut-out portion is formed in a surface of said mount portion intersecting a mount surface of the mobile device extending along the recessed bottom surface by cutting out a part of said base case so that the cut-off portion communicates with the outside.
2. The mobile device charging base according to claim 1 , wherein a second cut-out portion is additionally formed in the recessed bottom surface of said mount portion, wherein said second cut-out portion communicates with said cut-out portion, and extends in a part of the recessed bottom surface from the edge of the surface intersecting said mount surface so that the edge of said base case opens in a substantially rectangular U shape.
3. The mobile device charging base according to claim 1 further comprising a spacer that can be attached to a stopper wall so that an actual size of said mount portion can be changed, wherein the stopper wall can support the lower surface of the mobile device.
4. The mobile device charging base according to claim 3 , wherein said spacer includes two block portions, and a coupling portion that couples the two block portions to each other, wherein said block portions are designed to have surfaces substantially coplanar with interior wall surfaces of the base case when said spacer is attached to said mount portion, and wherein the interior wall surfaces of the base case face each other and define said cut-out portion.
5. The mobile device charging base according to claim 4 , wherein said spacer has a positioning protruding section that protrudes toward a side to be inserted into said mount portion, wherein a positioning recessed section is formed at a position of said mount portion corresponding to said positioning protruding section so that, when the positioning protruding section of said spacer is inserted into the positioning recessed section of said mount portion, said spacer is positioned in place.
6. The mobile device charging base according to claim 5 , wherein said base case has a spacer accommodation portion that accommodates said spacer.
7. The mobile device charging base according to claim 6 , wherein said mount portion is formed inclined on said base case.
8. The mobile device charging base according to claim 7 , wherein said spacer accommodation portion is located on the underside of said base case that is a side opposite to the side where said mount portion is formed.
9. The mobile device charging base according to claim 1 , wherein said mount portion has a substantially U shape in section.
10. A mobile device and charging base system comprising:
a mobile device having:
a device case,
a rechargeable battery that is detachably attached to said device case, and
an induction coil that charges said rechargeable battery by induced electric power; and
a charging base having:
a base case,
a mount portion that is formed in a recessed shape in section on the surface of said base case, and can detachably hold said mobile device at a predetermined position,
a power supply coil that is arranged in proximity to and inside a recessed bottom surface of said mount portion, and can be electromagnetically coupled to the induction coil of the mobile device pack placed on said mount portion, and
a power supply that is connected to said power supply coil,
wherein said charging base has a cut-out portion that is formed in a surface of said mount portion intersecting a mount surface of said mobile device extending along the recessed bottom surface by cutting out a part of said base case so that the cut-off portion communicates with the outside.
11. The mobile device and charging base system according to claim 10 , wherein an option unit can be coupled to said device case of said mobile device, wherein said mount portion of said charging base is designed so that said power supply coil is electromagnetically coupled to said induction coil when said mobile device with the option unit coupled thereto is placed on said mount portion, and wherein said mount portion of said charging base can receive a spacer that adjusts the position of said mobile device so that said power supply coil is electromagnetically coupled to said induction coil even when said mobile device without the option unit is placed on said mount portion.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009-237766 | 2009-10-14 | ||
JP2009237766A JP2011087391A (en) | 2009-10-14 | 2009-10-14 | Mobile device charging base, mobile device, and charging base |
Publications (1)
Publication Number | Publication Date |
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US20110084657A1 true US20110084657A1 (en) | 2011-04-14 |
Family
ID=43854326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/903,560 Abandoned US20110084657A1 (en) | 2009-10-14 | 2010-10-13 | Mobile device charging base, and mobile device and charging base system |
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US (1) | US20110084657A1 (en) |
JP (1) | JP2011087391A (en) |
CN (1) | CN102044894A (en) |
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US20130175982A1 (en) * | 2011-03-02 | 2013-07-11 | Triune Ip Llc | Rechargeable Energy Storage Apparatus |
US20140055096A1 (en) * | 2012-08-24 | 2014-02-27 | Snu R&Db Foundation | Battery pack, battery apparatus including the same, and cell balancing method thereof |
US20140132211A1 (en) * | 2012-11-12 | 2014-05-15 | Samsung Electronics Co., Ltd. | Cordless charging apparatus |
US20140232341A1 (en) * | 2011-10-27 | 2014-08-21 | Nec Infrontia Corporation | Charging stand |
USD737759S1 (en) * | 2013-06-09 | 2015-09-01 | Gigazone International Co., Ltd. | Charging base with portable power supply |
US20150270875A1 (en) * | 2011-08-30 | 2015-09-24 | L & P Property Management Company | Docking station for inductively charged portable electronic device |
US9281701B2 (en) | 2012-11-16 | 2016-03-08 | Ati Technologies Ulc | Wireless power transfer device for charging mobile/portable devices |
US20160072321A1 (en) * | 2013-04-15 | 2016-03-10 | Shenzhen Byd Auto R&D Company Limited | Wireless Charging Device and Method Using the Same |
US9548617B2 (en) | 2011-10-24 | 2017-01-17 | Nec Platforms, Ltd. | Battery-charging base for mobile information terminals |
US20180183480A1 (en) * | 2016-12-22 | 2018-06-28 | Jae Beom Kim | Non-conductive frame coated with conductive layer transmitting electromagnetic waves or having function of heat radiation |
US10361588B2 (en) * | 2015-12-07 | 2019-07-23 | Qualcomm Incorporated | Coupled resonator in a metal back cover |
US10664113B2 (en) | 2014-12-04 | 2020-05-26 | Apple Inc. | Coarse scan and targeted active mode scan for touch and stylus |
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US10868436B1 (en) * | 2019-10-02 | 2020-12-15 | Kingston Technology Corporation | Mobile device gaming accessory with swappable battery packs and wireless charging |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102012203938A1 (en) * | 2011-10-14 | 2013-04-18 | Robert Bosch Gmbh | Battery for handtool, has multilayer sealing film that dust-tightly or watertightly closes at least one electrical receiving region of battery cell unit |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01260757A (en) * | 1988-04-11 | 1989-10-18 | Matsushita Electric Ind Co Ltd | Battery accommodation unit |
US5686811A (en) * | 1995-11-09 | 1997-11-11 | Rayovac Corporation | Compact battery charger |
US6016046A (en) * | 1997-07-22 | 2000-01-18 | Sanyo Electric Co., Ltd. | Battery pack |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0498844U (en) * | 1991-02-01 | 1992-08-26 | ||
JP3642122B2 (en) * | 1996-09-27 | 2005-04-27 | 株式会社デンソー | Charger |
JPH118669A (en) * | 1997-06-19 | 1999-01-12 | Sharp Corp | Charging structure for portable equipment |
JPH1140206A (en) * | 1997-07-22 | 1999-02-12 | Sanyo Electric Co Ltd | Portable electrical equipment and charging table, and pack battery and charging table |
JPH11261678A (en) * | 1998-03-13 | 1999-09-24 | Matsushita Electric Ind Co Ltd | Charging device for portable electronic unit |
JP2000177173A (en) * | 1998-12-14 | 2000-06-27 | Xerox Corp | Device for polygon-less raster output scanning system |
JP2000224776A (en) * | 1999-02-01 | 2000-08-11 | Matsushita Electric Ind Co Ltd | Non-contact power supply equipment |
JP2000277173A (en) * | 1999-03-26 | 2000-10-06 | Seiriyou Denki Kk | Charging device |
KR100325247B1 (en) * | 1999-05-28 | 2002-03-04 | 윤종용 | Portable recharger |
JP2007068315A (en) * | 2005-08-30 | 2007-03-15 | Kyocera Corp | Charging cradle for portable communication terminal device |
JP2007088535A (en) * | 2005-09-20 | 2007-04-05 | Casio Hitachi Mobile Communications Co Ltd | Charging cradle and program |
TW200901599A (en) * | 2007-06-29 | 2009-01-01 | rong-cong Lin | Battery cover |
JP4744620B2 (en) * | 2009-05-13 | 2011-08-10 | 三洋電機株式会社 | Charging stand |
-
2009
- 2009-10-14 JP JP2009237766A patent/JP2011087391A/en active Pending
-
2010
- 2010-10-13 US US12/903,560 patent/US20110084657A1/en not_active Abandoned
- 2010-10-14 CN CN2010105103415A patent/CN102044894A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01260757A (en) * | 1988-04-11 | 1989-10-18 | Matsushita Electric Ind Co Ltd | Battery accommodation unit |
US5686811A (en) * | 1995-11-09 | 1997-11-11 | Rayovac Corporation | Compact battery charger |
US6016046A (en) * | 1997-07-22 | 2000-01-18 | Sanyo Electric Co., Ltd. | Battery pack |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130175982A1 (en) * | 2011-03-02 | 2013-07-11 | Triune Ip Llc | Rechargeable Energy Storage Apparatus |
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US9548617B2 (en) | 2011-10-24 | 2017-01-17 | Nec Platforms, Ltd. | Battery-charging base for mobile information terminals |
US9601934B2 (en) * | 2011-10-27 | 2017-03-21 | Nec Platforms, Ltd. | Charging stands arranged adjacently to reduce occupied area |
US20140232341A1 (en) * | 2011-10-27 | 2014-08-21 | Nec Infrontia Corporation | Charging stand |
US20140055096A1 (en) * | 2012-08-24 | 2014-02-27 | Snu R&Db Foundation | Battery pack, battery apparatus including the same, and cell balancing method thereof |
US9419466B2 (en) * | 2012-08-24 | 2016-08-16 | Snu R&Db Foundation | Battery pack, battery apparatus including the same, and cell balancing method thereof |
US20140132211A1 (en) * | 2012-11-12 | 2014-05-15 | Samsung Electronics Co., Ltd. | Cordless charging apparatus |
US9667077B2 (en) * | 2012-11-12 | 2017-05-30 | Samsung Electronics Co., Ltd | Cordless charging apparatus |
US9281701B2 (en) | 2012-11-16 | 2016-03-08 | Ati Technologies Ulc | Wireless power transfer device for charging mobile/portable devices |
US9667075B2 (en) * | 2013-04-15 | 2017-05-30 | Byd Company Limited | Wireless charging device and method using the same |
US20160072321A1 (en) * | 2013-04-15 | 2016-03-10 | Shenzhen Byd Auto R&D Company Limited | Wireless Charging Device and Method Using the Same |
USD737759S1 (en) * | 2013-06-09 | 2015-09-01 | Gigazone International Co., Ltd. | Charging base with portable power supply |
US10664113B2 (en) | 2014-12-04 | 2020-05-26 | Apple Inc. | Coarse scan and targeted active mode scan for touch and stylus |
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US10361588B2 (en) * | 2015-12-07 | 2019-07-23 | Qualcomm Incorporated | Coupled resonator in a metal back cover |
US20180183480A1 (en) * | 2016-12-22 | 2018-06-28 | Jae Beom Kim | Non-conductive frame coated with conductive layer transmitting electromagnetic waves or having function of heat radiation |
US10862543B2 (en) * | 2019-01-17 | 2020-12-08 | Capital One Services, Llc | Apparatus and method for wireless communication with improved reliability |
US10868436B1 (en) * | 2019-10-02 | 2020-12-15 | Kingston Technology Corporation | Mobile device gaming accessory with swappable battery packs and wireless charging |
TWI772911B (en) * | 2019-10-02 | 2022-08-01 | 美商惠普發展公司有限責任合夥企業 | Mobile deviceaccessory |
US11826637B2 (en) | 2019-10-02 | 2023-11-28 | Hewlett-Packard Development Company, L.P. | Mobile device gaming accessory with swappable battery packs and wireless charging |
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JP2011087391A (en) | 2011-04-28 |
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Legal Events
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AS | Assignment |
Owner name: SANYO ELECTRIC CO., LTD., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TOYA, SHOICHI;MORITA, HIDEYO;SASAJI, KATSUAKI;REEL/FRAME:025133/0345 Effective date: 20101008 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |